Ombati, Judygrace Monyangi. “Criteria Used to Assess Need for Use of Morphine for Adult Cancer Pain Relief in Kakamega County Referral Hospital, Kenya, Africa”. Asian Journal of Pharmacy, Nursing and Medical Sciences 8, no. 6 (December 28, 2020). Accessed March 29, 2024. https://www.ajouronline.com/index.php/AJPNMS/article/view/6421.