Maciejkiewicz, Katarzyna Maciejkiewicz, Katarzyna (Poland) Macioszek, Adam Mączewska, Joanna Mączewska, Joanna, Nuclear Medicine Department, Medical University of Warsaw (Poland) Mączewska, Joanna Madrzak, Dorota, Department of Nuclear Medicine, Voivodship Medical Specialty Center, Rzeszow, Poland Maecke, Helmut R., Department of Nuclear Medicine, University Hospital Freiburg, Germany Maffione, Anna Margherita Magner, James A. Magri, Gian Carlo, Nuclear Medicine, University of Brescia and Spedali Civili Brescia, Brescia, Italy Mahjoub, Yazid Mahmoudian, Anooshe-Sadat Mahmoudian, Babak, Nuclear Medicine Ward, Department of Radiology-Radiotherapy and Nuclear Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran Mahmoudian, Babak Majdabadi, Abbas Majewski, Jerzy Majidi Zolbanin, Jafar Majovsky, Martin, Central Military Hospital Prague Majstorov, Venjamin Makazlieva, Tanja Makazlieva, Tanja (North Macedonia) Makowska, Joanna Maksimovic, J. Malceva, Daniela, Clinical Laboratory ``Status``, Varna