Cephalalgia 2004; 24 Suppl 1: 1-160); Cephalalgia 2005; 25: 460-465 ©International Headache Society 2003/5 INTERNATIONAL CLASSIFICATION of HEADACHE DISORDERS.
©International Headache Society 2013 INTERNATIONAL CLASSIFICATION of HEADACHE DISORDERS 3rd edition beta, ICHD-3beta Jes Olesen, Danish Headach Center,