@article{c060fceaebdd4fefa1dada536193cb23,
title = "Complex comorbidities of recurrent headache disorders: Introduction to the special series",
author = "Penzien, \{Donald B.\} and Rains, \{Jeanetta C.\} and Lake, \{Alvin E.\} and Lipchik, \{Gay L.\} and Lipton, \{Richard B.\} and Saper, \{Joel R.\}",
year = "2006",
month = oct,
doi = "10.1111/j.1526-4610.2006.00575.x",
language = "English (US)",
volume = "46",
pages = "1324--1326",
journal = "Headache",
issn = "0017-8748",
publisher = "Wiley-Blackwell Publishing Ltd",
number = "9",
}