[1] Univ Mbujimayi, Fac Med, Pediat Dept, Mbujimayi 06201, DEM REP CONGO
[2] Univ Mbujimayi, Fac Med, Internal Med Dept, Mbujimayi 06201, DEM REP CONGO
[3] Univ Libre Bruxelles, Lab Hosp Univ Bruxelles, Clin Chem Dept Hereditary Red Blood Cell Disorder, Univ Lab Brussel, B-1070 Brussels, Belgium