The estimated effect of season and vitamin D in the first trimester on pubertal timing in girls and boys: a cohort study and an instrumental variable analysis.
Anne Gaml-SørensenNis BrixAndreas ErnstLea Lykke Harrits LunddorfChristian LindhGunnar ToftTine Brink HenriksenOnyebuchi Aniweta ArahCecilia Høst Ramlau-HansenPublished in: International journal of epidemiology (2023)
Both first pregnancy trimester during November-April and lower 25(OH)D3 were associated with earlier pubertal timing in girls and boys.