Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche.
Perry JR, Day F, Elks CE, Sulem P, Thompson DJ, Ferreira T, He C, Chasman DI, Esko T, Thorleifsson G, et al. Nature. 2014 Oct 2; 514(7520):92-97. Epub 2014 Jul 23.