title: Counting ovarian follicles is not without its challenges.
authors.forename: Karl R
authors.initials: KR
authors.lastname: Hansen
authors.forename: Michael R
authors.initials: MR
authors.lastname: Soules
mesh_terms: D000886:Anthropometry / Q000379:methods; D005260:Female; D005298:Fertility; D006801:Humans; D009929:Organ Size; D006080:Ovarian Follicle / Q000502:physiology; D010053:Ovary / Q000033:anatomy & histology* / Q000502:physiology; D015203:Reproducibility of Results; D012107:Research Design