[1] EPIDEMIOL RES UNIT, COPENHAGEN, DENMARK
[2] UCL, SCH MED,MRC,HIV CLIN TRIALS CTR, LONDON W1N 8AA, ENGLAND
[3] CTR PESQUISAS RENE RACHOU FIOCRUZ, LAB EPIDEMIOL, BELO HORIZONTE, MG, BRAZIL
[4] HOSP CLIN BARCELONA, EPIDEMIOL RES UNIT, BARCELONA, SPAIN
[5] UNIV FED BAHIA, BRAZILIAN SOC INFECT DIS, SALVADOR, BA, BRAZIL
[6] UNIV FED PELOTAS, DEPT SOCIAL MED, PELOTAS, BRAZIL
[7] MINIST HLTH, NAVRONGO HLTH RES CTR, NAVRONGO, GHANA
[8] AREA HOSP VARGAS, INST BIOMED, CARACAS, VENEZUELA
[9] MRC LABS, BANJUL, GAMBIA
[10] INDIAN COUNCIL MED RES, TB RES CTR, MADRAS, TAMIL NADU, INDIA
[11] CTR RES & TRAINING SKIN DIS & LEPROSY, TEHRAN, IRAN
[12] LONDON SCH HYG & TROP MED, LONDON WC1E 7HT, ENGLAND
[13] ICDDR B, PUBL HLTH SCI DIV, DHAKA, BANGLADESH
[14] WHO, UNDP, WORLD BANK, SPECIAL PROGRAMME RES & TRAINING TROP DIS, GENEVA, SWITZERLAND
[15] CHRISTIAN MED COLL & HOSP, VELLORE, TAMIL NADU, INDIA
[16] UNIV PHILIPPINES, COLL MED,CLIN EPIDEMIOL UNIT, MANILA, PHILIPPINES
[17] JOHNS HOPKINS UNIV, DEPT INT HLTH, BALTIMORE, MD USA
[18] PUBL HLTH LAB SERV, CTR COMMUNICABLE DIS SURVEILLANCE, LONDON NW9 5EQ, ENGLAND
[19] INST CHILD HLTH, DEPT EPIDEMIOL & PUBL HLTH, LONDON, ENGLAND
[20] MAKERERE UNIV, SCH MED,INST PUBL HLTH, KAMPALA, UGANDA
[21] SWISS TROP INST, CH-4002 BASEL, SWITZERLAND