1. Service d’orthopedie, pédiatrique, Hopital Saint Vincent-de-Paul, 74–82 avenue Denfert, Rochereau, 75014 Paris, France.
2. Department of Pediatric, Orthopaedic Surgery (APHP), René Descartes University, (Paris V), Saint-Vincent-de-Paul Hospital, 74–82 avenue Denfert-Rochereau, 75674 Paris Cedex, 14, France.
3. Kokkinou 12–14 Zaimi Street, TK, 27100 Pyrgos, Ilias, Greece.