Wiesel, PH, G Dorta, P Cuypers, M Herranz, ME Kreis, J-F Schnegg, and P Jornod. 2001. “Patient Satisfaction After Biofeedback for Constipation and Pelvic Floor Dyssynergia”. Swiss Medical Weekly 131 (1112):152-56. https://doi.org/10.4414/smw.2001.06125.