The age of the obesity onset is a very important factor for the development of metabolic complications and cardiovascular risk in children and adolescents with severe obesity. - Szczudlik, Ewa; Stępniewska, Anna; Bik-Multanowski, Mirosław; Brandt-Heunemann, Stephanie; Flehmig, Bertram; Małecka-Tendera, Ewa; Mazur, Artur; Petriczko, Elżbieta; Ranke, Michael B.; Wabitsch, Martin; Zachurzok, Agnieszka; Wójcik, Małgorzata (European Journal of Pediatrics, 2024)