Childhood overweight and obesity – analysis of the risk factors, including the patient’s family’s lifestyle, based on research results collected from two academic centres in Poland - Machałowski, Tomasz; Młyńczyk, Justyna; Piskozub, Malwina; Niedzielska, Karolina; Krzywińska-Zdeb, Elżbieta; Piotrowska-Depta, Maria (Pediatria Polska - Polish Journal of Paediatrics, 2018)