The use of positive deviance approach to improve health service delivery and quality of care: a scoping review. - Kassie, Ayelign Mengesha; Eakin, Elizabeth; Abate, Biruk Beletew; Endalamaw, Aklilu; Zewdie, Anteneh; Wolka, Eskinder; Assefa, Yibeltal (BMC Health Services Research, 2024)