6 Association française de pédiatrie ambulatoire (AFPA), Cabinet de pédiatrie, Albi, France.
7 Department of Pharmacology and Toxicology, Medical University of Sofia, Sofia, Bulgaria.
8 Medical College, Faculty of Health Sciences and Psychology, University of Rzeszów, Rzeszów, Poland.
9 Department of Pediatrics, Medical School, University of Pécs, Pécs, Hungary.
10 Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P), UE3533, Clermont Auvergne University, Aubiere, France.
11 Department of Pediatrics, Paracelsus Medical University, Klinikum Nürnberg, Nuremberg, Germany.
12 Department of Sport and Exercise Science, University of Salzburg, Salzburg, Austria.
13 Independent Researcher, Rome, Italy.
14 Department of Endocrinology, Children's Hospital P. & A. Kyriakou, Athens, Greece.