Copyright belongs exclusively to the International Headache Society (IHS). The International Classification of Orofacial Pain (ICOP) in this or subsequent editions may be reproduced freely by institutions, societies or individuals for scientific, educational or clinical purposes. Reproduction of any part or parts in any manner for commercial uses requires permission from IHS, which will be granted on payment of a fee. Please contact the publisher at the address below.
No takes yet. Share an insight, caveat, or question.
A 2020 study studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: