Foci of schistosomiasis mekongi, Northern Cambodia: II. Distribution of infection and morbidity. - Stich,A.HR.; Biays,S.; Odermatt,P.; Chan,M.; Cheam,S.; Kiev,S.; Seng Ly,C.; Legros,P.; Philips,M.; Lormand,J.D.; Tanner,M. (Trop Med Internat Health, 1999)