Margulis AV, Fortuny J, Kaye JA, Calingaert B, Reynolds M, Plana E, McQuay LJ, Jan Atsma W, Franks B, de Vogel S, Perez-Gutthann S, Arana A. Proportions of cancer cases in primary care, hospital, and cancer registry data among patients treated for overactive bladder. Letter to editor. Epidemiology. 2019 Mar;30(2):e8-9. doi: 10.1097/EDE.0000000000000953