Determinants of access to health services, out-of-Pocket expenditures, and therapeutic adherence in patients with diabetes mellitus: A single-center observational study. REV SEN [Internet]. 2026 Jan. 7 [cited 2026 May 2];14(1):67-83. Available from: http://signin.immowelt.de.rev-sen.ec/index.php/revista/article/view/163