1 Assistant Professor, Department of Anaesthesia, Pontificia Universidad Católica de Chile, Macul, Santiago de Chile.
2 Assistant Professor, Faculty of Medicine, Pontificia Universidad Católica de Chile, Macul, Santiago de Chile, mmbernal@uc.cl.
3 Research Assistant, School of Medicine, Pontificia Universidad Católica de Chile, Macul, Santiago de Chile.
4 Assistant Professor, Department of Cardiology, Pontificia Universidad Católica de Chile, Macul, Santiago de Chile, Department of Cardiology, Instituto Nacional del Tórax, Santiago, Chile.
5 Emeritus Professor and Founding Chair in Primary Health Care, Western Sydney University, Richmond, New South Wales, Australia.