Wiesel, P., Dorta, G., Cuypers, P., Herranz, M., Kreis, M., Schnegg, J.-F., & Jornod, P. (2001). Patient satisfaction after biofeedback for constipation and pelvic floor dyssynergia. Swiss Medical Weekly, 131(1112), 152–156. https://doi.org/10.4414/smw.2001.06125