Manfredi M, Bini G, Cruccu G, Accornero N, Berardelli A, Medolago L (August 1981). "Congenital absence of pain". Archives of Neurology. 38 (8): 507–11. doi:10.1001/archneur.1981.00510080069010. PMID6166287.
Manfredi M, Bini G, Cruccu G, Accornero N, Berardelli A, Medolago L (August 1981). "Congenital absence of pain". Archives of Neurology. 38 (8): 507–11. doi:10.1001/archneur.1981.00510080069010. PMID6166287.