Primary continuous unilateral headaches: a nosologic model for hemicrania continua. Cephalalgia.

Pareja JA, Cuadrado ML, Fernández-de-las-Peñas C, Montojo T, Álvarez M, López-de-Silanes C. Primary continuous unilateral headaches: a nosologic model for hemicrania continua. Cephalalgia. 2012 Apr;32(5):413-8. doi: 10.1177/0333102412441088. PubMed PMID: 22407660.