Health professionals’ knowledge about female genital schistosomiasis. A qualitative investigation in a schistosomiasis endemic area in South Africa oleh Ingvild Sommerfelt, Patricia Ndhlovu, Myra Taylor, Saloshni Naidoo, Pavitra Pillay, Hanne Haaland, Svein Gunnar Gundersen, Tsakani Furumele, Eyrun Floerecke Kjetland