Timing of puberty in boys and girls: A population-based study.
Nis BrixAndreas ErnstLea Lykke Braskhøj LauridsenErik ParnerHenrik StøvringJørn OlsenTine Brink HenriksenCecilia Høst Ramlau-HansenPublished in: Paediatric and perinatal epidemiology (2018)
These data indicate that age at menarche has declined and to some extent support a decline in age at attaining other markers of pubertal development among boys.