[1] Natl Inst Biomed Res, Kinshasa, DEM REP CONGO
[2] Natl Pedag Univ, Kinshasa, DEM REP CONGO
[3] Inst Trop Med, Dept Clin Sci, B-2000 Antwerp, Belgium
[4] Natl Malaria Control Programme, Kinshasa, DEM REP CONGO
[5] Univ Kinshasa, Kinshasa, DEM REP CONGO
[6] Univ Lubumbashi, Lubumbashi, DEM REP CONGO
[7] Katholieke Univ Leuven, Fac Med, Dept Microbiol & Immunol, Leuven, Belgium