Large-scale meta-analysis highlights the hypothalamic–pituitary–gonadal axis in the genetic regulation of menstrual cycle length - Laisk, T; Kukushkina, V; Palmer, D; Laber, S; Chen, C; Ferreira, T; Rahmioglu, N; Zondervan, K; Becker, C; Smoller, J; Lippincott, M; Salumets, A; et al. (Human Molecular Genetics, 2018)