Kaye JA, Margulis AV, Fortuny J, McQuay LJ, Plana E, Bartsch JL, Bui CL, Perez-Gutthann S, Arana A. Cancer incidence after initiation of antimuscarinic medications for overactive bladder in the United Kingdom: evidence for protopathic bias. Pharmacotherapy. 2017 Jun;37(6):673-83. doi: 10.1002/phar.1932
Groenwold RH, Klungel OH, Altman DJ, van der Graaf Y, Hoes AW, Moons KG, Rivero E, Fortuny J, PROTECT WP2. Adjustment for continuous confounders: an example of how to prevent residual confounding. Can Med Assoc J. 2013 Mar 19;185(5):401-6. doi: 10.1503/cmaj.120592