1. Department of Pulmonology and Respiratory Medicine , Faculty of Medicine , Airlangga University - Dr. Soetomo General Hospital , Surabaya , Indonesia
2. Faculty of Medicine , Duta Wacana Christian University , Yogyakarta , Indonesia
3. Department of Cardiology and Vascular , Faculty of Medicine , Airlangga University - Dr. Soetomo General Hospital , Surabaya , Indonesia