Comparison of intratesticular lidocaine,sacrococcygeal epidural lidocaine and intravenous methadone in cats undergoing castration: a prospective,randomized, investigator-blind clinical trial
1. Department of Veterinary Anesthesiology and Critical Care, Ecole Nationale Vétérinaire d''Alfort, Paris, France;2. Department of Clinical Sciences and Services, Royal Veterinary College, Hatfield, UK