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nursing gnm physiology anatomy healthcare bsc blood bsc nursing child health cardiovascular system medicine paediatrics pediatrics child health nursing nursing care rbc wbc platelets blood group blood vessels artery veins venules arterioles development developmental theories theory by livson tet spells tof tetralogy of fallot ntd nearaltubedefects spinabifida meningiocele exchange transfusion hyperbilirubinemia neonatal exchange transfusion push pull method circulatory system pyloric stenosis megacolon hirschsprung's disease anatomy and physiology neurons system mscn blood disorders anemia leukemia thalassemia hemophillia thrombocytopenia nursing student pediatric nursing blood disorders in children hematology rheumatic fever rheumatic heart disease nursing students cardiac disorders msc n psychology psychosexual psychosocial cognitive moral erik erikson sigmund freud jean piaget kohlberg growth and developmet health social students nervous system cns pns central nervous system nerves