Yudi Her Oktaviono1,*, Muhammad Rafdi Amadis1, Makhyan Jibril Al-Farabi1,2
1Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga, Prof Moestopo Street 6-8, Surabaya, INDONESIA.
2School of Management, Healthcare Entrepreneurship Division, University College London, Gower St, Bloomsbury, WC1E 6BT London, UK.