[1] Univ Hosp Complex Le Bon Samaritain, Ndjamena, Chad
[2] Assoc Promot Village Hlth Chad APSVT, Bekamba, Chad
[3] Minist Publ Hlth & Natl Solidar, Ndjamena, Chad
[4] Pontificia Univ Catolica Chile, Fac Med, Santiago, Chile
[5] Univ KU Leuven, Ctr Biomed Eth & Law, Dept Publ Hlth & Primary Care, Leuven, Belgium
[6] Univ Montpellier, Inst Mol Genet Montpellier IGMM, CNRS, Montpellier, France
[7] Inst Res Dev IRD, Montpellier, France
[8] Univ Montpellier, Ctr Polit & Social Studies CEPEL, CNRS, Montpellier, France
[9] Univ Montpellier, Univ Antilles, Pathogenesis & Control Chron & Emerging Infect PCC, INSERM U1058,French Blood Establishment EFS, Montpellier, France
[10] Montpellier Univ Hosp CHU, Montpellier, France