Efficacy of 1, 5, and 20 mg oral sildenafil in the treatment of adults with pulmonary arterial hypertension: a randomized, double-blind study with open-label extension

Addition of Sildenafil to Long-Term Intravenous Epoprostenol Therapy in Patients with Pulmonary Arterial Hypertension

(2013) Gérald Simonneau   ANNALS OF INTERNAL MEDICINE

Updated Treatment Algorithm of Pulmonary Arterial Hypertension

(2013) Nazzareno Galiè et al.   JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY

The Minimal Important Difference in the 6-Minute Walk Test for Patients with Pulmonary Arterial Hypertension

(2012) Stephen C. Mathai et al.   AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE

Validation of 6-Minute Walk Distance as a Surrogate End Point in Pulmonary Arterial Hypertension Trials

(2012) Nicole B. Gabler et al.   CIRCULATION

Usefulness of Serial N-Terminal Pro–B-Type Natriuretic Peptide Measurements for Determining Prognosis in Patients With Pulmonary Arterial Hypertension

(2011) Gert-Jan Mauritz et al.   AMERICAN JOURNAL OF CARDIOLOGY

The 6-min walk distance in healthy subjects: reference standards from seven countries

(2010) C. Casanova et al.   EUROPEAN RESPIRATORY JOURNAL

ACCF/AHA 2009 Expert Consensus Document on Pulmonary Hypertension

(2009) Vallerie V. McLaughlin et al.   JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY