Continuous peripheral nerve blocks in hospital wards after orthopedic surgery: a multicenter prospective analysis of the quality of postoperative analgesia and complications in 1,416 patients. - Capdevila,X.; Pirat,P.; Bringuier,S.; Gaertner,E.; Singelyn,F.; Bernard,N.; Choquet,O.; Bouaziz,H.; Bonnet,F. (Anesthesiology, 2005)