Wirtanto, Ardy Putra, and Andika Sitepu. “Adherence to European Society of Cardiology Heart Failure Treatment Guideline in Haji Adam Malik General Hospital Medan”. Sumatera Medical Journal 3, no. 1 (January 20, 2020): 59–64. Accessed August 5, 2025. https://idjpcr.usu.ac.id/smj/article/view/3382.