Madadi, P., U. Amstutz, M. Rieder, S. Ito, V. Fung, S. Hwang, J. Turgeon, V. Michaud, G. Koren, and B. C. Carleton. “CLINICAL PRACTICE GUIDELINE: CYP2D6 GENOTYPING FOR SAFE AND EFFICACIOUS CODEINE THERAPY”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 20, no. 3, Nov. 2018, https://jptcp.com/index.php/jptcp/article/view/368.