Paglialonga, Letizia Pagourelias, Efstathios Pagourelias, Efstathios D. Pais, Javier López Paixão-Almeida, Adail, Cardiology and Electrocardiology Service -UNIMEC Hospital– Vitoria da Conquista – Bahia - Brazil Pająk, Andrzej Pająk, Andrzej, Department of Epidemiology and Population Studies, Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Medical College Pająk, Andrzej, Department of Clinical Epidemiology and Population Studies, Institute of Public Health, Jagiellonian University Medical College, Krakow Pająk, Andrzej, Department of Epidemiology and Population Studies, Institute of Public Health, Jagiellonian University Medical College, Krakow, Poland Pajak, Andrzej Pająk, Andrzej Pająk, Iwona Pająk, Jacek Pająk, Jacek, Chair and Department of Children's Cardiology, Medical University of Silesia, Katowice, Poland. Pajkowski, Marcin Pakkirisamy, Gobu, Jawaharlal Institute of Postgraduate Medical Education and Research Pal, Raveen S., Queen's University Pal, Raveen S., Kingston General Hospital, Kingston, ON, Canada (Canada) Pala, Barbara Pala, Massimo Pala, Selcuk Palacios-Rubio, Julián Palandri Chagas, Antônio Carlos, São Paulo University, Instituto do Coração (INCOR) Palaniswamy, Chandrasekar, Westchester Medical Center, New York Medical College Palazzolo, Jorge