[1] Amer Univ Beirut, Clin Res Inst, POB 11-0236, Beirut 11072020, Lebanon
[2] Amer Univ Beirut, Dept Med, POB 11-0236, Beirut 11072020, Lebanon
[3] Amer Univ Beirut, AUB GRADE Ctr, POB 11-0236, Beirut 11072020, Lebanon
[4] Bruyere Continuing Care, Bruyere Res Inst, Bruyere St, Ottawa, ON K1N 5C8, Canada
[5] Univ Ottawa, Bruyere St, Ottawa, ON K1N 5C8, Canada
[6] Univ Ottawa, Inst Populat Hlth, Ctr Global Hlth, 43 Bruyere St, Ottawa, ON K1N 5C8, Canada
[7] Univ Nacl Colombia, Fac Med, Grp Equ Hlth, Edif Uriel Gutierrez, Bogota, Colombia
[8] Soc Colombiana Anestesiol & Reaninzac, Technol Dev Ctr, Soc Colombiana Anestesiol & Reaninzac Cra, 15 A 1, Bogota, Colombia
[9] IIB St Pau, Biomed Res Inst St Pau, Iberoamer Cochrane Ctr, Clin Epidemiol & Publ Hlth Dept, C St Antoni Maria Claret 167,Pavello 18,Planta 0, Barcelona 08025, Spain
[10] Univ Glasgow, Publ Hlth MRC CSO Social & Publ Hlth Sci Unit, 200 Renfield St, Glasgow G2 3QB, Lanark, Scotland
[11] Birmingham VA Med Ctr, Sch Med, Dept Med, 700 19th St S, Birmingham, AL 35233 USA
[12] Univ Alabama Birmingham, Sch Publ Hlth, Div Epidemiol, 1720 2nd Ave S, Birmingham, AL 35294 USA
[13] Mayo Clin, Coll Med, Dept Orthoped Surg, 5777 E Mayo Blvd, Phoenix, AZ 85054 USA
[14] Mayo Clin, Prevent Med, Evidence Based Practice Ctr, 200 1st St SW, Rochester, MN 55905 USA
[15] Univ Paris 05, INSERM, Sorbonne Paris Cite, Ctr Rech Epidemiol & Stat,U1153, 1 Pl Parvis Notre Dame, F-75004 Paris, France
[16] Hop Hotel Dieu, Cochrane France, 1 Pl Parvis Notre Dame, F-75181 Paris 04, France
[17] Univ Freiburg, Med Ctr, Cochrane Germany, Breisacher Str 153, D-79110 Freiburg, Germany
[18] Univ Washington, Inst Technol, Tacoma, WA USA
[19] Univ Calgary, Cumming Sch Med, Dept Emergency Med, 3330 Hosp Dr NW, Calgary, AB T2N 4N1, Canada
[20] Chiang Mai Univ, Fac Med, Chiang Mai 50200, Thailand
[21] Univ Ottawa, Ottawa Hosp Res Inst, 75 Laurier Ave E, Ottawa, ON K1N 6N5, Canada
[22] Fac Hlth Sci, Dept Hlth Res Methods Evidence & Impact, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
[23] Fac Hlth Sci, Dept Med, 1280 Main St W, Hamilton, ON L8S 4K1, Canada
[24] Socialstyrelsen, Ralambsvagen 3, S-11259 Stockholm, Sweden
[25] Univ Chile, Fac Dent, Evidence Based Dent Unit, Av Libertador Bernardo OHiggins, Santiago 1058, Chile
[26] Charleston Area Med Ctr, Dept Neurol, 1201 Washington St East,Suite 100, Charleston, WV 25301 USA
[27] Univ Manchester, Fac Biol Med & Hlth, Sch Hlth Sci, Div Nursing Midwifery & Social Work, Oxford Rd, Manchester M13 9PL, Lancs, England
[28] Univ Luterana Brasil, Publ Hlth Ufcspa, Av Farroupilha 8001, Canoas, RS, Brazil
[29] Conceicao Hosp, Av Farroupilha 8001, Canoas, RS, Brazil
[30] Long Isl Jewish Med Ctr North Shore Univ Hosp, 270-05 76th Ave, Queens, NY 11040 USA
[31] Univ Hosp Basel, Basel Inst Clin Epidemiol & Biostat, Spitalstr 21, CH-4056 Basel, Switzerland
[32] McMaster Univ, Master GRADE Ctr, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
[33] McMaster Univ, Dept Med, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
[34] Univ Ottawa, Inst Populat Hlth, Ctr Global Hlth, 75 Laurier Ave E, Ottawa, ON K1N 6N5, Canada