title: [Environmental factors causing psychogenic abdominal pain in schoolchildren].
mesh_terms: D000005:Abdomen; D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D010146:Pain / Q000209:etiology / Q000523:psychology*; D011602:Psychophysiologic Disorders / Q000209:etiology*; D013315:Stress, Psychological / Q000150:complications*
vernacular_title: Badania nad czynnikami środowiskowymi warunkujacymi psychogenne bóle brzucha u dzieci w wieku szkolnym.