We are grateful to peer reviewers that provided support to our reviews throughout 2019:

• Maral A'arab-Amini
• Dr. Walid Kamal Abdelbasset, Associate Professor, Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
• Lena Al-Khudairy
• Emmanuel Androulakis MRCP MSc PhD FESC, Royal Brompton NHS Foundation Trust
• Sergio Barra, Cardiology Department, Hospital da Luz Arrabida, V. N. Gaia, Portugal and Cardiology Department, Royal Papworth Hospital, Cambridge, UK
• Dr Jocelyne Benatar, Cardiology Department, Auckland District Health Board
• Alexandros Briasoulis, MD, PhD, FACC
• Dr Kit Byatt, Hereford, UK
• Claudia L Campos, MD  Wake Forest School of Medicine Medicine, USA
• Dr Queenie Chan, School of Public Health, Imperial College London, UK
• Pratima Chowdary,  Consultant Haematologist, KD Haemophilia and Thrombosis Centre, Royal Free Hospital 
• Pascal Colson, Montpellier University, Montpellier, France
• Gh.-Andrei Dan, MD, PhD, Medicine University "Carol Davila", Bucharest, Romania
• Ryan D'Angelo, PharmD, BCPS - University of the Sciences, Philadelphia College of Pharmacy, USA
• Lampson Fan, MB BChir, Dphil, MRCP, Freeman Hospital
• Dr Philippe Gaudard, Anesthesiology and Critical Care Medicine Department, CHU Montpellier, PhyMedExp, University of Montpellier, INSERM, CNRS, Montpellier, France
• Dr Sarah Gerritsen, School of Population Health, University of Auckland, New Zealand
• Kamrouz Ghadimi, M.D., Cardiovascular Anesthesiology and Critical Care Medicine, Duke Heart Center, Duke University School of Medicine
• Nicholas Harrison M.D., Wayne State University, Detroit MI, USA
• Anders Holt, Cardiovascular Department, Herlev and Gentofte Hospital, Denmark
• Benjamin D. Horne, Intermountain Medical Center Heart Institute and Stanford University School of Medicine
• Jalila Jbilou MD, PhD Université de Moncton and Centre de formation médicale du Nouveau-Brunswick
• Dr Pardeep S Jhund, Institute of Cardiovascular and Medical Sciences, University of Glagow, UK
• J.C. Kelder, Department of Cardiology, St Antonius Hospital, Nieuwegein, The Netherlands
• Andrew Kompa, Monash University, Melbourne, Australia
• Gaetano Antonio Lanza, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Roma, Italy
• Reza Malekzadeh M.D Professor of Medicine Digestive Disease Research Center Tehran University of Medical Science
• David McIlroy, Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
• F. Mihm MD, Professor of Anesthesia, Dept of Anesthesiology, Perioperative and Pain Management, Stanford University Medical Center, Stanford, California, USA
• Andrew G Miller BSRT RRT-ACCS RRT-NPS, Duke University Medical Center
• Alyssa Moran, ScD, MPH, RD (Assistant Professor, Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health)
• Taulant Muka, Institute of Social and Preventive Medicine, University of Bern, Switzerland
• Gavin Murphy, BHF Chair of Cardiac Surgery, University of Leicester, UK
• Nikolaos Papageorgiou UCL and Barts Heart Centre
• Robin L. Parks
• Noemi Pavo MD PhD, Medical University of Vienna, Austria
• Dr Shyh Poh Teo, Consultant Geriatrician and Physician, RIPAS Hospital, Brunei
• Francois Roubille, Cardiology Department, University of Montpellier, Montpellier, France
• G. Blair Sarbacker, PharmD, BCACP Associate Professor of Pharmacy Practice Presbyterian College School of Pharmacy, USA
• Andrew J. Sauer, MD Associate Professor, The University of Kansas Medical Center, Kansas City, USA
• Elizabeth Smith, PhD, RD, LDN,  Assistant Professor,  Middle Tennessee State University
• Mark M. Smith, MD; Mayo Clinic Rochester, MN
• Dr Mehul Srivastava, Honorary Research Fellow, University College London - Institute of Health Informatics
• Majid Mufaqam Syed-Abdul, University of Missouri-Columbia, Missouri, USA
• Saraschandra Vallabhajosyula, MD
• Lenny Vasanthan T, Physiotherapy Unit, Physical Medicine and Rehabilitation Department, Christian Medical College, Vellore, India
• Massimo Volpe, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Italy
• Craig D Williams, OSU/OHSU College of Pharmacy, Portland, Oregon, USA