Weihua Meng, Mark J. Adams, Harry L. Hebert, Ian J. Deary, Andrew M. McIntosh, Blair H. Smith, EBioMedicine, Available online 31 January 2018, ISSN 2352-3964, doi:10.1016/j.ebiom.2018.01.023.
Loci associated with broadly-defined headache: Gene FXN, Chromosome 9, Lead SNP rs4596713, P 2.30 × 10− 8, Effective allele T, Minor allele frequency 0.41, Beta− 0.0078, standard error 0.0014.