Sensitivities and Specificities of Diagnostic Tests and Infection Prevalence of Schistosoma haematobium Estimated from Data on Adults in Villages Northwest of Accra, Ghana - Koukounari,A; Webster,JP; Donnelly,CA; Bray,BC; Naples,J; Bosompern,K; Shiff,C (AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE, 2009)