@misc{indiciaedafd9c163ed3, title = {Headache epidemiology: how and why?}, author = {Lars Jacob Stovner}, year = {2006}, doi = {10.1007/s10194-006-0276-4}, url = {https://pubmed.ncbi.nlm.nih.gov/16575503/}, note = {Source identifier: 16575503} }