Quantum redactiones paginae "Menstrua" differant

Initiat menstrua aetate circiter 12-13 annorum<ref>{{cite journal |authors=Chumlea W. C., Christine M Schubert C. M. |title=Age at Menarche and Racial Comparisons in US Girls |journal=Pediatrics |year=2003 |month=Ian |volume=111 |issue=1 |pages=110-3 |url=https://pubmed.ncbi.nlm.nih.gov/12509562/}}</ref>, terminant menstruae circum aetatem 35-55 annorum. Et initio et versus terminum intervalla inter menstruas irregulariter occurrunt. Cum cyclis anovulatoriis (cyclo menstruali sine ovulatione) adulescentium saepe menstruae graviores observantur, at in aetate versus [[menopausa]]m menstruae tenuiores apparent.