1 Pulmonary Hypertension Unit, European Reference Network for Rare Respiratory Diseases (ERN-Lung), Department of Cardiology, University Hospital October 12, 28041 Madrid, Spain. Electronic address: acruzutrilla@gmail.com.
2 Department of Cardiology, Hospital Henares, Coslada, Spain.
3 Department of Pulmonology, ERN-Lung, Marqués de Valdecilla University Hospital, Santander, Spain.
4 Department of Pulmonology, ERN-Lung, Vall d'Hebron University Hospital, Barcelona, Spain.
5 Pulmonary Hypertension Unit, European Reference Network for Rare Respiratory Diseases (ERN-Lung), Department of Cardiology, University Hospital October 12, 28041 Madrid, Spain; CIBERCV, Madrid, Spain; Complutense University of Madrid, Madrid, Spain.