S. B Patten, “CONFOUNDING BY SEVERITY AND INDICATION IN OBSERVATIONAL STUDIES OF ANTIDEPRE SSANT EFFECTIVENESS”, J Popl Ther Clin Pharmacol, vol. 15, no. 2, Dec. 2018, Accessed: Sep. 17, 2025. [Online]. Available: https://jptcp.com/index.php/jptcp/article/view/209