AUTHOR=Sun Lingling , Zhao Rongjian , You Xuemei , Meng Junpeng , Meng Lin , Di Haili TITLE=Association between family income to poverty ratio and severe headache/migraine in the American adults: data from NHANES 1999–2004 JOURNAL=Frontiers in Neurology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2024.1427277 DOI=10.3389/fneur.2024.1427277 ISSN=1664-2295