Pre-analytical variables affecting breast cancer biomarker expression: A controlled single-specimen study of fixation duration, cold ischemia time, and fixative preparation in a low-resource setting. - Ndengue, Clément Parfait; Atangana, Paul Jean Adrien; Ateba, Gilbert Roger; Mandengue, Samuel Honoré; Mboudou, Emile Telesphore; Eboumbou Moukoko, Carole Else (PLoS ONE, 2026)