Ipsen, P.; Egekvist, H.; Aksglaede, K.; Zachariae, H.; Bjerring, P.; Thommesen, P. Oesophageal Manometry and Video-Radiology in Patients With Systemic Sclerosis: A Retrospective Study of Its Clinical Value. Acta Derm Venereol 2000, 80, 130-133.