Additional file 5: of Mailed HPV self-sampling for cervical cancer screening among underserved minority women: study protocol for a randomized controlled trial KobetzErin SeayJulia AmofahAnthony PierreLarry BispoJordan TrevilDinah GonzalezMartha PoitevienMartine Koru-SengulTulay CarrasquilloOlveen 2017 Trial flow diagram. (DOCX 153 kb)