Saad Abdalla Al-Zawi, Abdalla Saczko, Jolanta Safranow, Krzysztof Sakwa, Leon Saleh, Nagawan Yossery Saleh, Nagwan Yossery Salih, Ali Salunkhe, Jyoti Samimian, Sedighe Sanak, Tomasz Sarı, Hıdır Sathananthan, Sharlini Schminke, Ulf Schultz, Monika Sekuła, Michał Sertbaş, Yaşar Setianto, Budhi Shah, Samir Shayakhmetova, Ganna Mykhailivna Shih, Jessie Siedlaczek, Michał Sielski, Sławomir Siemińska, Emilia, Department of Cardiology and Internal Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland Sikora, Adam Sikora, Joanna, Department of Cardiology and Internal Medicine, Nicolaus Copernicus University, Collegium Medicum in Bydgoszcz, Poland