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Kim, Yang-Kyun; Cho, Chul-Ho; Ahn, Seo-Kyu; Goh, In-Ho; Kim, Han-Joong . (2008). A study on medical services quality and its influence upon value of care and patient satisfaction – Focusing upon outpatients in a large-sized hospital. Total Quality Management & Business Excellence, 19(11), 1155–1171. doi:10.1080/14783360802323594 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research