Nagel, Christian Stress Doppler echocardiography for early detection of systemic sclerosis-associated pulmonary arterial hypertension. [electronic resource] - Arthritis research & therapy Jun 2015 - 165 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 1478-6362 Standard No.: 10.1186/s13075-015-0673-7 doi Subjects--Topical Terms: AdultAgedCross-Sectional StudiesEarly DiagnosisEchocardiography, Doppler--methodsEchocardiography, Stress--methodsFemaleHumansHypertension, Pulmonary--diagnostic imagingMaleMiddle AgedProspective StudiesScleroderma, Systemic--complications