S J de Vlas

A pocket chart to estimate true Schistosoma mansoni prevalences.

J D Habbema, G J van Oortmarssen, J. Habbema, 1993, Parasitology today.

Underestimation of Schistosoma mansoni prevalences.

S. D. de Vlas, B Gryseels, S J de Vlas, 1992, Parasitology today.

Review papers : Statistical models for estimating prevalence and incidence of parasitic diseases

J D Habbema, G J van Oortmarssen, N J Nagelkerke, 1993, Statistical methods in medical research.