TAHIR, M.; GILKISON, W. OPEN ACCESS UPPER GASTROINTESTINAL ENDOSCOPY: FINANCIAL BURDEN OR BENEFIT FOR HOSPITALS?. KHYBER MEDICAL UNIVERSITY JOURNAL, [S. l.], v. 8, n. 4, p. 167, 2017. Disponível em: https://www.kmuj.kmu.edu.pk/article/view/15900. Acesso em: 28 mar. 2024.