Pareja JA, Montojo T, Guerrero ÁL, Álvarez M, Porta-Etessam J, Cuadrado ML. Idiopathic Ophthalmodynia and Idiopathic Rhinalgia: A Prospective Series of 16 New Cases. Headache. 2015 Nov-Dec;55(10):1430-5. doi: 10.1111/head.12609. PubMed PMID: 26198298.