Nephrotic SyndromeNephrosis, LipoidSyndromeGlomerulonephritis, MembranousGlomerulosclerosis, Focal SegmentalProteinuriaPuromycin AminonucleosideKidney GlomerulusPrednisolonePodocytesGlomerulonephritisSteroidsGlomerulonephritis, MembranoproliferativeNephrosisKidneyChild WelfareDown SyndromeImmunosuppressive AgentsBiopsyEdemaCyclosporineMetabolic Syndrome XDisabled ChildrenRecurrenceAmyloidosisChild BehaviorDrug ResistanceAdrenal Cortex HormonesGlucocorticoidsTreatment OutcomeSerum AlbuminPrednisoneRetrospective StudiesRemission, SpontaneousRemission InductionFollow-Up StudiesKidney DiseasesParaneoplastic SyndromesAbnormalities, MultipleSjogren's SyndromeInfant, NewbornPulse Therapy, DrugRisk FactorsChild Health ServicesChild RearingChlorambucilMembrane ProteinsAlbuminsTime FactorsRenal VeinsLevamisoleDrug Therapy, CombinationGlomerulonephritis, IGAKidney Function TestsProspective StudiesAge FactorsGlomerular Basement MembraneChild Behavior DisordersGlomerular Filtration BarrierChild, InstitutionalizedPlasmapheresisChild PsychologyFrasier SyndromeCase-Control StudiesMutationTurner SyndromePedigreePurpura, Schoenlein-HenochIntracellular Signaling Peptides and ProteinsCyclophosphamideChild of Impaired ParentsMycophenolic Acid