Maciejewski, Marek Maciejewski, Pawel Maciejewski, Łukasz Macovei, Liviu, Department of Cardiology, Cardiovascular Diseases Institute “Prof. Dr. George I M Georgescu”, Romania University of Medicine and Pharmacy “Gr. T. Popa”, Iasi, Romania Mączyńska-Mazuruk, Renata, Cardiac Department of the Voivodship Emergency Service and Medical Transport Station (WSPRiTS) “Meditrans” in Warsaw Mączyńska-Mazuruk, Renata Mada, Razvan O. Madala, Seetharamprasad, Hurley Medical Center/Michigan State University Madanchi, Mehdi Maddestra, Nicola Maddestra, Nicola (Italy) Madeira, Hugo Madejczyk, Andrzej Madejczyk, Piotr Waciński i Andrzej Madias, John E. Madias, John E., Mount Sinai School of Medicine of New York University and the Division of Cardiology, Elmhurst Hospital Center, New York, NY, USA Madziala, Marcin Madziala, Marcin Andrzej Maechler, Patrick Maffei, Silvia Mafrici, Antonio Maga, Mikołaj Maga, Paweł Maga, Paweł (Poland) Magalhães, Karen, School of Medicine, Faculdade de Saúde e Ecologia Humana Vespasiano