Nygaard, E A Recurrent abdominal pain in children revisited: irritable bowel syndrome and psychosomatic aspects. A prospective study. [electronic resource] - Scandinavian journal of gastroenterology Oct 2004 - 938-40 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0036-5521 Standard No.: 10.1080/00365520410003399 doi Subjects--Topical Terms: Abdominal Pain--diagnosisAdolescentAge DistributionChildChild, PreschoolChronic DiseaseDiagnosis, DifferentialFemaleHumansIncidenceIrritable Bowel Syndrome--diagnosisLongitudinal StudiesMaleNorway--epidemiologyPrognosisProspective StudiesRecurrenceRisk AssessmentSampling StudiesSeverity of Illness IndexSex Distribution