Self-reported efficacy of complementary and alternative medicine in chronic headache subjects in the general population

ES Kristoffersen, K Aaseth, RB Grande, C Lundqvist, MB Russell
2013 The Journal of Headache and Pain  
doi:10.1186/1129-2377-1-s1-p23 fatcat:qdkismwnbrcg3i3ttwhs34vefu