1. Descartes R. L'Homme translated by M. Foster in Lectures on the History of Physiology during the 16th, 17th and 18th centuries. Cambdridge University Press, 1901:1644.
2. Theories of pain: from specificity to gate control;Moayedi;J Neurophysiol,2013
3. Pain mechanisms: a new theory;Melzack;Science,1965
4. 75 Years of opioid research: the exciting but vain quest for the Holy Grail;Corbett;Br J Pharmacol,2006