Factors affecting the prevention of unwanted pregnancies among young adolescents in secondary schools in the Eastern Province of Rwanda: An explorative qualitative study. oleh Thierry Claudien Uhawenimana, Kellen Muganwa, Marie Chantal Uwimana, Marie Grace Sandra Musabwasoni, Olive Tengera, Joy Bahumura, Joella Mukashyaka, Jackline Mukakamanzi, Emmanuel Habyarimana, Innocent Ngerageze, Hellen Nwanko Chinwe, Emmerance Uwingabire, Francoise Mujawamariya, Richard Nsengiyumva, Oliva Bazirete