Supplemental material for Development of a claims-based algorithm to identify potentially undiagnosed chronic migraine patients

Supplemental Material for Development of a claims-based algorithm to identify potentially undiagnosed chronic migraine patients by Jelena M Pavlovic, Justin S Yu, Stephen D Silberstein, Michael L Reed, Steve H Kawahara, Robert P Cowan, Firas Dabbous, Karen L Campbell, Anand R Shewale, Riya Pulicharam, Jonathan W Kowalski, Hema N Viswanathan and Richard B Lipton in Cephalalgia