Factors affecting the prevention of unwanted pregnancies among young adolescents in secondary schools in the Eastern Province of Rwanda: An explorative qualitative study

" Thierry Claudien Uhawenimana , Kellen Muganwa, Marie Chantal Uwimana, Marie Grace Sandra Musabwasoni, Olive Tengera, Joy Bahumura, Joella Mukashyaka, Jackline Mukakamanzi, Emmanuel Habyarimana, Innocent Ngerageze,