共 45 条
- [21] Poor livestock keepers: ecosystem - poverty - health interactions[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 2017, 372 (1725)Grace, Delia论文数: 0 引用数: 0 h-index: 0机构: Int Livestock Res Inst, Box 30709, Nairobi, Kenya Int Livestock Res Inst, Box 30709, Nairobi, KenyaLindahl, Johanna论文数: 0 引用数: 0 h-index: 0机构: Int Livestock Res Inst, Box 30709, Nairobi, Kenya Uppsala Univ, Dept Med Biochem & Microbiol, S-75105 Uppsala, Sweden Int Livestock Res Inst, Box 30709, Nairobi, KenyaWanyoike, Francis论文数: 0 引用数: 0 h-index: 0机构: Int Livestock Res Inst, Box 30709, Nairobi, Kenya Int Livestock Res Inst, Box 30709, Nairobi, KenyaBett, Bernard论文数: 0 引用数: 0 h-index: 0机构: Int Livestock Res Inst, Box 30709, Nairobi, Kenya Int Livestock Res Inst, Box 30709, Nairobi, KenyaRandolph, Tom论文数: 0 引用数: 0 h-index: 0机构: Int Livestock Res Inst, Box 30709, Nairobi, Kenya Int Livestock Res Inst, Box 30709, Nairobi, KenyaRich, Karl M.论文数: 0 引用数: 0 h-index: 0机构: Lincoln Univ, Lincoln 7647, New Zealand Int Livestock Res Inst, Box 30709, Nairobi, Kenya
- [22] Gubrium J. F., 2012, The SAGE Handbook of Interview Research: The Complexity of the Craft
- [23] Gender and Antimicrobial Resistance: What Can We Learn From Applying a Gendered Lens to Data Analysis Using a Participatory Arts Case Study?[J]. FRONTIERS IN GLOBAL WOMENS HEALTH, 2022, 3论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:King, Rebecca论文数: 0 引用数: 0 h-index: 0机构: Univ Leeds, Nuffield Ctr Int Hlth & Dev, Leeds, England Univ Leeds, Nuffield Ctr Int Hlth & Dev, Leeds, England
- [24] Kitutu Freddy Eric, 2017, BMJ Glob Health, V2, pe000334, DOI 10.1136/bmjgh-2017-000334
- [25] Governing Antimicrobial Resistance (AMR) in a Changing Climate: A Participatory Scenario Planning Approach Applied to Sweden in 2050[J]. FRONTIERS IN PUBLIC HEALTH, 2022, 10Lambraki, Irene Anna论文数: 0 引用数: 0 h-index: 0机构: Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, Canada Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaCousins, Melanie论文数: 0 引用数: 0 h-index: 0机构: Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, Canada Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaGraells, Tiscar论文数: 0 引用数: 0 h-index: 0机构: Royal Swedish Acad Sci, Global Econ Dynam & Biosphere, Stockholm, Sweden Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaLeger, Anais论文数: 0 引用数: 0 h-index: 0机构: Univ Geneva, Global Studies Inst, Geneva, Switzerland Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaAbdelrahman, Sara论文数: 0 引用数: 0 h-index: 0机构: Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, Canada Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaDesbois, Andrew P.论文数: 0 引用数: 0 h-index: 0机构: Univ Stirling, Inst Aquaculture, Fac Nat Sci, Stirling, Scotland Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaGallagher, Rose论文数: 0 引用数: 0 h-index: 0机构: Royal Coll Nursing UK, London, England Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaStaaf Larsson, Birgitta论文数: 0 引用数: 0 h-index: 0机构: Swedish Univ Agr Sci, Swedish Ctr Anim Welf, Uppsala, Sweden Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaMattson, Bengt论文数: 0 引用数: 0 h-index: 0机构: Swedish Pharmaceut Ind Assoc, LIF, Stockholm, Sweden Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaHenriksson, Patrik论文数: 0 引用数: 0 h-index: 0机构: Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden Royal Swedish Acad Sci, Beijer Inst Ecol Econ, Stockholm, Sweden WorldFish, George Town, Malaysia Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaTroell, Max论文数: 0 引用数: 0 h-index: 0机构: Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden Royal Swedish Acad Sci, Beijer Inst Ecol Econ, Stockholm, Sweden Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, CanadaSogaard Jorgensen, Peter论文数: 0 引用数: 0 h-index: 0机构: Royal Swedish Acad Sci, Global Econ Dynam & Biosphere, Stockholm, Sweden Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden Univ Waterloo, Sch Publ Hlth Sci, Waterloo, ON, Canada论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:
- [26] Measurement of gender as a social determinant of health in epidemiology-A scoping review[J]. PLOS ONE, 2021, 16 (11):Miani, Celine论文数: 0 引用数: 0 h-index: 0机构: Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, Germany Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, GermanyWandschneider, Lisa论文数: 0 引用数: 0 h-index: 0机构: Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, Germany Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, GermanyNiemann, Jana论文数: 0 引用数: 0 h-index: 0机构: Martin Luther Univ Halle Wittenberg, Inst Med Sociol, Halle, Germany Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, GermanyBatram-Zantvoort, Stephanie论文数: 0 引用数: 0 h-index: 0机构: Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, Germany Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, GermanyRazum, Oliver论文数: 0 引用数: 0 h-index: 0机构: Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, Germany Bielefeld Univ, Sch Publ Hlth, Dept Epidemiol & Int Publ Hlth, Bielefeld, Germany
- [27] Measuring inequalities in the distribution of health workers: the case of Tanzania[J]. HUMAN RESOURCES FOR HEALTH, 2009, 7Munga, Michael A.论文数: 0 引用数: 0 h-index: 0机构: Natl Inst Med Res, Dar Es Salaam, Tanzania Univ Bergen, Ctr Int Hlth, Bergen, Norway Natl Inst Med Res, Dar Es Salaam, TanzaniaMaestad, Ottar论文数: 0 引用数: 0 h-index: 0机构: Chr Michelsen Inst, Bergen, Norway Natl Inst Med Res, Dar Es Salaam, Tanzania
- [28] Global burden of bacterial antimicrobial resistance in 2019: a systematic analysis[J]. LANCET, 2022, 399 (10325) : 629 - 655Murray, Christopher J. L.论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Sch Med, Dept Hlth Metr Sci, Seattle, WA USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAIkuta, Kevin Shunji论文数: 0 引用数: 0 h-index: 0机构: Vet Affairs Greater Los Angeles Healthcare Syst, Dept Infect Dis, Los Angeles, CA USA Univ Calif Los Angeles, Dept Infect Dis, Los Angeles, CA USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USASharara, Fablina论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USASwetschinski, Lucien论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAguilar, Gisela Robles论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Big Data Inst, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAGray, Authia论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAHan, Chieh论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABisignano, Catherine论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USARao, Puja论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAWool, Eve论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAJohnson, Sarah C.论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABrowne, Annie J.论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAChipeta, Michael Give论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAFell, Frederick论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAHackett, Sean论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAHaines-Woodhouse, Georgina论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAHamadani, Bahar H. Kashef论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAKumaran, Emmanuelle A. P.论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Ctr Trop Med & Global Hlth, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAMcManigal, Barney论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Big Data Inst, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAgarwal, Ramesh论文数: 0 引用数: 0 h-index: 0机构: All India Inst Med Sci, Dept Pediat, New Delhi, India Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAkech, Samuel论文数: 0 引用数: 0 h-index: 0机构: Kenya Med Res Inst KEMRI Wellcome Trust Res Progr, Hlth Serv Res Unit, Nairobi, Kenya Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAlbertson, Samuel论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA论文数: 引用数: h-index:机构:Andrews, Jason论文数: 0 引用数: 0 h-index: 0机构: Stanford Univ, Dept Med, Stanford, CA 94305 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAravkin, Aleskandr论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Dept Appl Math, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAAshley, Elizabeth论文数: 0 引用数: 0 h-index: 0机构: Mahosot Hosp, Lao Oxford Mahosot Hosp Wellcome Trust Res Unit, Viangchan, Laos Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABailey, Freddie论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Big Data Inst, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABaker, Stephen论文数: 0 引用数: 0 h-index: 0机构: Univ Cambridge, Dept Med, Cambridge, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABasnyat, Buddha论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Oxford Univ Clin Res Unit Nepal, Kathmandu, Nepal Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABekker, Adrie论文数: 0 引用数: 0 h-index: 0机构: Stellenbosch Univ, Dept Paediat & Child Hlth, Cape Town, South Africa Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABender, Rose论文数: 0 引用数: 0 h-index: 0机构: Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABethou, Adhisivam论文数: 0 引用数: 0 h-index: 0机构: Jawaharlal Inst Postgrad Med Educ & Res, Dept Neonatol, Pondicherry, India Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABielicki, Julia论文数: 0 引用数: 0 h-index: 0机构: Univ Basel, Paediat Infect Dis Dept, Childrens Hosp, Basel, Switzerland St Georges Univ London, Paediat Infect Dis Res Grp, London, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABoonkasidecha, Suppawat论文数: 0 引用数: 0 h-index: 0机构: Queen Sirikit Natl Inst Child Hlth, Dept Pediat, Bangkok, Thailand Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USABukosia, James论文数: 0 引用数: 0 h-index: 0机构: Kenya Med Res Inst KEMRI Wellcome Trust Res Progr, Nairobi Programme, Nairobi, Kenya Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACarvalheiro, Cristina论文数: 0 引用数: 0 h-index: 0机构: Univ Sao Paulo, Dept Pediat, Ribeirao Preto, Brazil Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACastaneda-Orjuela, Carlos论文数: 0 引用数: 0 h-index: 0机构: Inst Nacl Salud, Colombian Natl Hlth Observ, Bogota, Colombia Univ Nacl Colombia, Epidemiol & Publ Hlth Evaluat Grp, Bogota, Colombia Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAChansamouth, Vilada论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Ctr Trop Med & Global Hlth, Nuffield Dept Med, Oxford, England Mahosot Hosp, Lao Oxford Mahosot Hosp Wellcome Trust Res Unit, Viangchan, Laos Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAChaurasia, Suman论文数: 0 引用数: 0 h-index: 0机构: All India Inst Med Sci, Dept Neonatol, Rishikesh, India Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAChiurchiu, Sara论文数: 0 引用数: 0 h-index: 0机构: Bambino Gesu Pediat Hosp, Immunol & Infect Dis Unit, Acad Dept Pediat, Rome, Italy Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USAChowdhury, Fazle论文数: 0 引用数: 0 h-index: 0机构: Bangabandhu Sheikh Mujib Med Univ, Internal Med, Dhaka, Bangladesh Mahidol Univ, Mahidol Oxford Trop Med Res Unit, Bangkok, Thailand Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACook, Aislinn J.论文数: 0 引用数: 0 h-index: 0机构: St Georges Univ London, Paediat Infect Dis Res Grp, London, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACooper, Ben论文数: 0 引用数: 0 h-index: 0机构: Univ Oxford, Ctr Trop Med & Global Hlth, Nuffield Dept Med, Oxford, England Univ Oxford, Nuffield Dept Med, Oxford, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACressey, Tim R.论文数: 0 引用数: 0 h-index: 0机构: Chiang Mai Univ, PHPT AMS Res Unit, Chiang Mai, Thailand Univ Liverpool, Dept Mol & Clin Pharmacol, Liverpool, Merseyside, England Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USACriollo-Mora, Elia论文数: 0 引用数: 0 h-index: 0机构: Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Pharm, Mexico City, DF, Mexico Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA论文数: 引用数: h-index:机构:Darboe, Saffiatou论文数: 0 引用数: 0 h-index: 0机构: London Sch Hyg & Trop Med, Med Res Council Unit Gambia, Dis Control & Eliminat Dept, Banjul, Gambia Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USADay, Nicholas P. J.论文数: 0 引用数: 0 h-index: 0机构: Mahidol Univ, Fac Trop Med, Bangkok, Thailand Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USADe Luca, Maia论文数: 0 引用数: 0 h-index: 0机构: Bambino Gesu Pediat Hosp, Acad Hosp Pediat Dept, Rome, Italy Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USADokova, Klara论文数: 0 引用数: 0 h-index: 0机构: Med Univ Varna, Dept Social Med & Hlth Care Org, Varna, Bulgaria Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA
- [29] Njuki J., 2013, Women, Livestock Ownership and Markets: Bridging the Gender Gap in Eastern and Southern Africa, P26
- [30] Pastoralists' Vulnerability to Trypanosomiasis in Maasai Steppe[J]. ECOHEALTH, 2017, 14 (04) : 718 - 731Nnko, Happiness J.论文数: 0 引用数: 0 h-index: 0机构: Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, Tanzania Univ Dodoma, Dodoma, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaGwakisa, Paul S.论文数: 0 引用数: 0 h-index: 0机构: Sokoine Univ Agr, Morogoro, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaNgonyoka, Anibariki论文数: 0 引用数: 0 h-index: 0机构: Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, Tanzania Univ Dodoma, Dodoma, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaSaigilu, Meshack论文数: 0 引用数: 0 h-index: 0机构: Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaOle-Neselle, Moses论文数: 0 引用数: 0 h-index: 0机构: Emergence Ctr Transboundary Anim Dis, FAO Tanzania Off, Dar Es Salaam, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaKisoka, William论文数: 0 引用数: 0 h-index: 0机构: Natl Inst Med Res, Dare Es Salaam, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaSindato, Calvin论文数: 0 引用数: 0 h-index: 0机构: Natl Inst Med Res, Tabora, Tanzania Southern African Ctr Infect Dis Surveillance, Morogoro, Tanzania Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, TanzaniaEstes, Anna论文数: 0 引用数: 0 h-index: 0机构: Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, Tanzania Penn State Univ, State Coll, PA USA Nelson Mandela African Inst Sci & Technol, Sch Life Sci & Bioengn, POB 447,Arusha Tengeru Campus, Arusha, Tanzania