Wachuła, Ewa, Division of Clinical Oncology, Department of Oncology and Radiotherapy, Silesian Medical University in Katowice, Poland Wachuła, Ewa, Division of Radiotherapy and Oncology, Department of Clinical Oncology, Silesian Medical University, Katowice, Poland (Poland) Wachuła, Ewa Wachuła, Ewa (Poland) Walczak, Klaudia Walczak, Krzysztof Walczak, Krzysztof, Regional Railway Hospital, Katowice, Poland Walczak, Krzysztof Walczak, Mieczysław Walczak, Mieczysław Walczak, Mieczysław, Department of Paediatrics, Endocrinology, Diabetology, Metabolic Diseases, and Cardiology of Developmental Age, Pomeranian Medical University, Szczecin, Poland (Poland) Walczak, Mieczysław Walczak, Mieczysław (Poland) Walczak-Bogatek, Agata Walczak-Gałęzewska, Marta Walczak-Jędrzejowska, Renata Walczak-Jędrzejowska, Renata Walczak-Jędrzejowska, Renata (Poland) Walczycka, Lucyna Walczyk, Agnieszka Walczyk, Agnieszka, Endocrinology Department, Holycross Cancer Centre, Kielce, Poland Walczyk, Agnieszka (Poland) Walecka-Kapica, Ewa Walecka-Kapica, Ewa, Departament of Clinical Nutrition and Gastroenterological Diagnostics, Medical University, Lodz, Poland (Poland) Waler, Janusz