Wiesel, P., G. Dorta, P. Cuypers, M. Herranz, M. Kreis, J.-F. Schnegg, and P. Jornod. “Patient Satisfaction After Biofeedback for Constipation and Pelvic Floor Dyssynergia”. Swiss Medical Weekly, vol. 131, no. 1112, Mar. 2001, pp. 152-6, doi:10.4414/smw.2001.06125.