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Thüer, Susann; Mellema, Sibylle; Doherr, Marcus G; Wechsler, Beat; Nuss, Karl; Steiner, Adrian (2007). Effect of local anaesthesia on short- and long-term pain induced by two bloodless castration methods in calves. Veterinary journal, 173(2), pp. 333-42. Amsterdam: Elsevier 10.1016/j.tvjl.2005.08.031
