PubertyPuberty, PrecociousPuberty, DelayedSexual MaturationAge Determination by SkeletonGonadotropin-Releasing HormoneKisspeptinsBody HeightLuteinizing HormoneTestosteroneBody WeightGrowth DisordersReproductionAdolescent DevelopmentAge FactorsTestisAdrenarcheGrowthSex CharacteristicsHypogonadismFollicle Stimulating HormoneEstrusTurner SyndromeOvaryEstradiolSex FactorsGonadotropinsSexual DevelopmentAgingHypothalamic DiseasesPregnancyOvulationFertilityLongitudinal StudiesBone DevelopmentFibrous Dysplasia, PolyostoticBody Mass IndexGonadal Steroid HormonesGrowth HormoneNeurosecretory SystemsBody CompositionGonadal HormonesWeaningHypothalamusChild DevelopmentDrug ImplantsNeurokinin BAnthropometryCattleAdolescent BehaviorTriptorelin PamoateProgesteroneGonadotropins, PituitaryOrgan SizeHymenMenarcheHypothalamo-Hypophyseal SystemEstrus DetectionPituitary GlandWeight GainSeasonsAdolescent PsychologyOxandroloneScrotumUterusHyperandrogenismCross-Sectional StudiesBody ImageInsulin-Like Growth Factor IVirilismLeptinReference ValuesAndrogensOvariectomyAdrenal Hyperplasia, CongenitalEstrous CycleTime FactorsSexual Behavior, AnimalInhibinsAbsorptiometry, PhotonMammary Glands, AnimalOrchiectomyAdoptionObesityEating DisordersGenitalia, MaleBreedingGonadsHormonesAnalysis of VarianceLeuprolideInfant, NewbornHuman Growth HormoneSchoolsSwineDancingBone DensityHamartomaOvernutritionRadioimmunoassay