...pain with opioids: is hydromorphone less constipating than...
Therapy of cancer pain with opioids: is hydromorphone less constipating than morphine?: A-801An abstract is unavailable.doi:10.1097/00003643-200406002-00714Wirz, S.Wartenberg, H.-C.Wittmann, M.Knuefermann, P.Baumgarten, G.Nadstawek, J....