Applications and implementation considerations for stepped-wedge designs in sub-Saharan Africa: a systematic review. - Musa, Zaidat Adesola; Akinsolu, Folahanmi Tomiwa; Salako, Abideen Oluwarotimi; Abodunrin, Olunike Rebecca; Ola, Oluwabukola Mary; Ezechi, Oliver Chukwujekwu (Frontiers in Epidemiology, 2026)