title: A longitudinal study of psychosomatic symptoms in healthy 11-18 year old girls and boys.
mesh_terms: D000124:Achievement; D000293:Adolescent; D000367:Age Factors; D001007:Anxiety / Q000523:psychology; D001828:Body Image; D002648:Child; D002657:Child Development; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D011602:Psychophysiologic Disorders / Q000523:psychology*; D013315:Stress, Psychological / Q000523:psychology