A national baseline prevalence survey of schistosomiasis in the Philippines using stratified two-step systematic cluster sampling design

Leonardo L, Rivera P, Saniel O, Villacorte E, Lebanan MA, Crisostomo B, Hernandez L, Baquilod M, Erce E, Martinez R, Velayudhan R. A national baseline prevalence survey of schistosomiasis in the Philippines using stratified two-step systematic cluster sampling design. J Trop Med. 2012; 2012: 936128.