Response to: ‘Inflammation in SLE-PAH: good news or not?’ by Junyan Qian et al

Thank you very much for your interest in our article ‘Two distinct clinical phenotypes of pulmonary arterial hypertension secondary to systemic lupus erythematosus’, and we are glad to answer the question ‘Inflammation in SLE-PAH: good news or not?’ as below. First, referral bias may exist and contribute to the different outcome. As an example, the Peking Union Medical College Hospital (PUMCH) cohort has more patients with pulmonary arterial hypertension secondary to systemic lupus erythematosus …