Microvascular function is impaired in children with morbid obesity - Schlager, O; Willfort-Ehringer, A; Hammer, A; Steiner, S; Fritsch, M; Giurgea, A; Margeta, C; Lilaj, I; Zehetmayer, S; Widhalm, K; Koppensteiner, R; Gschwandtner, M E (Vasc Med, 2011)