"Prevalence of Cholelithiasis Among Nigerians: A Prospective Sonographic Study In A Tertiary Center In Sokoto, Northwest Nigeria" (2025) المجلة العصرية للعلوم الصحية والتطبيقية, 2(1), ص 59–67. doi:10.70411/MJHAS.2.1.2025186.