共 9 条
[1]
Effect of the COVID-19 pandemic on medical student career perceptions: a national survey study
[J].
Byrnes, Yasmeen M.
;
Civantos, Alyssa M.
;
Go, Beatrice C.
;
McWilliams, Tara L.
;
Rajasekaran, Karthik
.
MEDICAL EDUCATION ONLINE,
2020, 25 (01)

Byrnes, Yasmeen M.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA

Civantos, Alyssa M.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA

Go, Beatrice C.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA

McWilliams, Tara L.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Biostat Anal Ctr, Philadelphia, PA 19104 USA Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA

Rajasekaran, Karthik
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Dept Otorhinolaryngol Head & Neck Surg, Philadelphia, PA 19104 USA Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA
[2]
Gupta Nishtha, 2021, Ind Psychiatry J, V30, pS282, DOI 10.4103/0972-6748.328830
[3]
Positive impact of COVID-19 on career choice in pediatric medical students: a longitudinal study
[J].
Hu, Liyuan
;
Wu, Hao
;
Zhou, Wenhao
;
Shen, Jianqing
;
Qiu, Wenwei
;
Zhang, Ruo
;
Wu, Jingyan
;
Chai, Yiming
.
TRANSLATIONAL PEDIATRICS,
2020, 9 (03)
:243-252

Hu, Liyuan
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China
Fudan Univ, Childrens Hosp, Dept Neonatol, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Wu, Hao
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Zhou, Wenhao
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China
Fudan Univ, Childrens Hosp, Dept Neonatol, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Shen, Jianqing
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Qiu, Wenwei
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Zhang, Ruo
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Wu, Jingyan
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China

Chai, Yiming
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China
Fudan Univ, Childrens Hosp, Dept Neurol, Shanghai, Peoples R China Fudan Univ, Childrens Hosp, Dept Educ & Training, 399 Wanyuan Rd, Shanghai, Peoples R China
[4]
Burnout Among Healthcare Workers in the COVID 19 Era: A Review of the Existing Literature
[J].
Leo, Carlo Giacomo
;
Sabina, Saverio
;
Tumolo, Maria Rosaria
;
Bodini, Antonella
;
Ponzini, Giuseppe
;
Sabato, Eugenio
;
Mincarone, Pierpaolo
.
FRONTIERS IN PUBLIC HEALTH,
2021, 9

Leo, Carlo Giacomo
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Clin Physiol, Lecce, Italy CNR, Inst Clin Physiol, Lecce, Italy

Sabina, Saverio
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Clin Physiol, Lecce, Italy CNR, Inst Clin Physiol, Lecce, Italy

Tumolo, Maria Rosaria
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Res Populat & Social Policies, Brindisi, Italy CNR, Inst Clin Physiol, Lecce, Italy

Bodini, Antonella
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Appl Math & Informat Technol E Magenes, Milan, Italy CNR, Inst Clin Physiol, Lecce, Italy

Ponzini, Giuseppe
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Res Populat & Social Policies, Brindisi, Italy CNR, Inst Clin Physiol, Lecce, Italy

Sabato, Eugenio
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Res Populat & Social Policies, Brindisi, Italy
A Perrino PO, Resp Dis Unit, Brindisi, Italy CNR, Inst Clin Physiol, Lecce, Italy

Mincarone, Pierpaolo
论文数: 0 引用数: 0
h-index: 0
机构:
CNR, Inst Res Populat & Social Policies, Brindisi, Italy CNR, Inst Clin Physiol, Lecce, Italy
[5]
COVID-19 and Adolescent Depression and Suicide Risk Screening Outcomes
[J].
Mayne, Stephanie L.
;
Hannan, Chloe
;
Davis, Molly
;
Young, Jami F.
;
Kelly, Mary Kate
;
Powell, Maura
;
Dalembert, George
;
McPeak, Katie E.
;
Jenssen, Brian P.
;
Fiks, Alexander G.
.
PEDIATRICS,
2021, 148 (03)

Mayne, Stephanie L.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Hannan, Chloe
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Davis, Molly
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Penn, Perelman Sch Med, Dept Psychiat, Philadelphia, PA 19104 USA
Univ Penn, Leonard Davis Inst Hlth Econ, Penn Implementat Sci Ctr, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Young, Jami F.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Dept Child & Adolescent Psychiat & Behav Sci, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Psychiat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Kelly, Mary Kate
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Powell, Maura
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Dalembert, George
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

McPeak, Katie E.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Jenssen, Brian P.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA

Fiks, Alexander G.
论文数: 0 引用数: 0
h-index: 0
机构:
Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, Ctr Pediat Clin Effectiveness, Philadelphia, PA 19104 USA
Childrens Hosp Philadelphia, PolicyLab, Philadelphia, PA 19104 USA
Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA Childrens Hosp Philadelphia, Possibil Project, Philadelphia, PA 19104 USA
[6]
Prevalence and correlates of stress and burnout among US healthcare workers during the COVID-19 pandemic: A national cross-sectional survey study
[J].
Prasad, Kriti
;
McLoughlin, Colleen
;
Stillman, Martin
;
Poplau, Sara
;
Goelz, Elizabeth
;
Taylor, Sam
;
Nankivil, Nancy
;
Brown, Roger
;
Linzer, Mark
;
Cappelucci, Kyra
;
Barbouche, Michael
;
Sinsky, Christine A.
.
ECLINICALMEDICINE,
2021, 35

Prasad, Kriti
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA
Hennepin Healthcare, Minneapolis, MN 55415 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

McLoughlin, Colleen
论文数: 0 引用数: 0
h-index: 0
机构:
Amer Med Assoc, 515 N State St, Chicago, IL 60610 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Stillman, Martin
论文数: 0 引用数: 0
h-index: 0
机构:
Hennepin Healthcare, Minneapolis, MN 55415 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Poplau, Sara
论文数: 0 引用数: 0
h-index: 0
机构:
Hennepin Healthcare, Minneapolis, MN 55415 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Goelz, Elizabeth
论文数: 0 引用数: 0
h-index: 0
机构:
Hennepin Healthcare, Minneapolis, MN 55415 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Taylor, Sam
论文数: 0 引用数: 0
h-index: 0
机构:
Amer Med Assoc, 515 N State St, Chicago, IL 60610 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Nankivil, Nancy
论文数: 0 引用数: 0
h-index: 0
机构:
Amer Med Assoc, 515 N State St, Chicago, IL 60610 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Brown, Roger
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Wisconsin, Sch Nursing, Madison, WI USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Linzer, Mark
论文数: 0 引用数: 0
h-index: 0
机构:
Hennepin Healthcare, Minneapolis, MN 55415 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Cappelucci, Kyra
论文数: 0 引用数: 0
h-index: 0
机构:
Amer Med Assoc, 515 N State St, Chicago, IL 60610 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Barbouche, Michael
论文数: 0 引用数: 0
h-index: 0
机构:
Forward Hlth Grp, Madison, WI USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA

Sinsky, Christine A.
论文数: 0 引用数: 0
h-index: 0
机构:
Amer Med Assoc, 515 N State St, Chicago, IL 60610 USA Univ Minnesota, Sch Med, 420 Delaware St SE, Minneapolis, MN 55455 USA
[7]
Effects of COVID-19 pandemic on mental health of children and adolescents: A systematic review of survey studies
[J].
Theberath, Monique
;
Bauer, David
;
Chen, Weizhi
;
Salinas, Manisha
;
Mohabbat, Arya B.
;
Yang, Juan
;
Chon, Tony Y.
;
Bauer, Brent A.
;
Wahner-Roedler, Dietlind L.
.
SAGE OPEN MEDICINE,
2022, 10

Theberath, Monique
论文数: 0 引用数: 0
h-index: 0
机构:
St Olaf Coll, Northfield, MN 55057 USA St Olaf Coll, Northfield, MN 55057 USA

Bauer, David
论文数: 0 引用数: 0
h-index: 0
机构:
St Olaf Coll, Northfield, MN 55057 USA St Olaf Coll, Northfield, MN 55057 USA

Chen, Weizhi
论文数: 0 引用数: 0
h-index: 0
机构:
Century High Sch, Rochester, MN USA St Olaf Coll, Northfield, MN 55057 USA

Salinas, Manisha
论文数: 0 引用数: 0
h-index: 0
机构:
Mayo Clin, Div Gen Internal Med, Jacksonville, FL USA St Olaf Coll, Northfield, MN 55057 USA

Mohabbat, Arya B.
论文数: 0 引用数: 0
h-index: 0
机构:
Mayo Clin, Div Gen Internal Med, 200 First St SW,RO MA 17 77W, Rochester, MN 55905 USA St Olaf Coll, Northfield, MN 55057 USA

Yang, Juan
论文数: 0 引用数: 0
h-index: 0
机构:
Mayo Clin, Div Gen Internal Med, 200 First St SW,RO MA 17 77W, Rochester, MN 55905 USA St Olaf Coll, Northfield, MN 55057 USA

Chon, Tony Y.
论文数: 0 引用数: 0
h-index: 0
机构:
St Olaf Coll, Northfield, MN 55057 USA St Olaf Coll, Northfield, MN 55057 USA

Bauer, Brent A.
论文数: 0 引用数: 0
h-index: 0
机构:
St Olaf Coll, Northfield, MN 55057 USA St Olaf Coll, Northfield, MN 55057 USA

Wahner-Roedler, Dietlind L.
论文数: 0 引用数: 0
h-index: 0
机构:
St Olaf Coll, Northfield, MN 55057 USA St Olaf Coll, Northfield, MN 55057 USA
[8]
Student-Designed Cross-Sectional Pandemic Knowledge Survey of 8th-12th Grade Students, Milwaukee, WI, April 2020
[J].
Vasudev, Krish
;
Singh, Hersh
;
Neumann, August A.
;
Zhao, William M.
;
Mondano, Lyle Dominic Pelayo
.
FRONTIERS IN PEDIATRICS,
2021, 9

Vasudev, Krish
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA

Singh, Hersh
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA

Neumann, August A.
论文数: 0 引用数: 0
h-index: 0
机构:
Marquette Univ High Sch, Upper Sch Div, Milwaukee, WI 53217 USA Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA

Zhao, William M.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA

Mondano, Lyle Dominic Pelayo
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA Univ Sch Milwaukee, Upper Sch Div, Milwaukee, WI 53217 USA
[9]
COVID-19 outbreak improves attractiveness of medical careers in Chinese senior high school students
[J].
Zhang, Ruoxin
;
Pei, Jianfeng
;
Wang, Yanli
;
Wang, Lei
;
Yeerjiang, Yeerzhati
;
Gao, Haifeng
;
Xu, Wanghong
.
BMC MEDICAL EDUCATION,
2022, 22 (01)

Zhang, Ruoxin
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Pei, Jianfeng
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Wang, Yanli
论文数: 0 引用数: 0
h-index: 0
机构:
Wuhan 4 High Sch, 347 Jie Fang Ave, Wuhan 430022, Hubei, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Wang, Lei
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Yeerjiang, Yeerzhati
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Gao, Haifeng
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Admiss Off, Shanghai Med Coll, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China

Xu, Wanghong
论文数: 0 引用数: 0
h-index: 0
机构:
Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Dept Epidemiol,Key Lab Publ Hlth Safety,Minist Ed, Key Lab Hlth Technol Assessment,Natl Hlth Commiss, 138 Yi Xue Yuan Rd, Shanghai 200032, Peoples R China