@article{88158c1c43a34c5ea86bd8c860c47038,
title = "Introduction to the special series on the chronification of headache: Mechanisms, risk factors, and behavioral strategies aimed at primary and secondary prevention of chronic headache",
author = "Penzien, \{Donald B.\} and Rains, \{Jeanetta C.\} and Lipton, \{Richard B.\}",
year = "2008",
month = jan,
doi = "10.1111/j.1526-4610.2007.00968.x",
language = "English (US)",
volume = "48",
pages = "5--6",
journal = "Headache",
issn = "0017-8748",
publisher = "Wiley-Blackwell Publishing Ltd",
number = "1",
}