Onchocerciasis: the pre-control association between prevalence of palpable nodules and skin microfilariae.

Coffeng LE, Pion SD, O'Hanlon S, Cousens S, Abiose AO, Fischer PU, Remme JH, Dadzie KY, Murdoch ME, de Vlas SJ, Basanez MG, Stolk WA, Boussinesq M