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2. Analysis of frequency and pathology of pulmonary hypertension associated with connective tissue diseases;Yoshida,2004
3. The prevalence of undiagnosed pulmonary arterial hypertension in subjects with connective tissue disease at the secondary health care level of community-based rheumatologists (the UNCOVER study);Wigley;Arthritis Rheum,2005
4. Updated clinical classification of pulmonary hypertension;Simonneau;J Am Coll Cardiol,2009
5. Study on the pulmonary hypertension associated with mixed connective tissue disease;Yoshida,2008