Implementing oncology clinical trials in Nigeria: a model for capacity building oleh Atara Ntekim, Abiola Ibraheem, Adenike Adeniyi-Sofoluwe, Toyosi Adepoju, Mojisola Oluwasanu, Toyin Aniagwu, Olutosin Awolude, Williams Balogun, Olayinka Kotila, Prisca Adejumo, Chinedum Peace Babalola, Ganiyu Arinola, Oladosu Ojengbede, Christopher O. Olopade, Olufunmilayo I. Olopade