[1] McGill Univ, Inst Parasitol, Ste Anne De Bellevue, PQ, Canada
[2] Brandon Univ, Dept Zool, Brandon, MB, Canada
[3] Fac Med, Neuroparasitol Neuroepidemiol Trop Lab, Limoges, France
[4] Natl Onchocerciasis Task Force Cameroon, Yaounde, Cameroon
[5] Inst Rech Dev, UR 24 Epidemiol Prevent, La Paz, Bolivia
[6] River Blindness Fdn, Lancaster, England
[7] Inst Res Dev, UR 24 Epidemiol Prevent, Paris, France