Play to reduce anxiety in children after bone marrow aspiration.
D000293:Adolescent; D001007:Anxiety / Q000209:etiology / Q000628:therapy*; D001707:Biopsy, Needle / Q000009:adverse effects*; D001853:Bone Marrow / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000523:psychology*; D010989:Play Therapy