Patients with pulmonary arterial hypertension (PAH) 
Patients with chronic thromboembolic pulmonary hypertension (CTEPH) 
All prevalent patients (diagnosed >12 month ago) with PAH or distal CTEPH who had a consultation at the PH centre in Zurich between November 2015 and November 2016) 

NCT03198910_inc_T1
Condition
pulmonary arterial hypertension (PAH)
NCT03198910_inc_T2
Condition
chronic thromboembolic pulmonary hypertension (CTEPH)
NCT03198910_inc_T3
Temporal
>12 month ago
NCT03198910_inc_T4
Condition
PAH
NCT03198910_inc_T5
Condition
CTEPH
NCT03198910_inc_T6
Qualifier
distal
NCT03198910_inc_T8
Visit
Zurich
NCT03198910_inc_T9
Temporal
between November 2015 and November 2016
NCT03198910_inc_T10
Visit
consultation at the PH centre