@article{article4914e282,
title   = {Urinary 6-Sulphatoxymelatonin levels are depressed in chronic migraine and several comorbidities},
author = {Masruha, Marcelo R. and Lin, Jaime and Vieira, Domingos S. de Souza and Minett, Thais S. C. and Cipolla-Neto, José and Zukerman, Eliova and Vilanova, Luiz C. P. and Peres, Mario F. P.},
year = {2010},
journal   = {Headache}
}