1. C. Gentry, Where does it hurt? Wall Street J. (1999) R6.
2. From acute to chronic pain: mechanisms and hypotheses;Cervero,1996
3. A method for determining loss of pain sensation;D’Armour;J. Pharmacol. Exp. Ther.,1941
4. The prediction of analgesic activity in man by animal testing;Grumbach,1966
5. Animal models of nociception;Le Bars;Pharmacol. Rev.,2001