[1] Univ Paris 05, Necker EM Hosp, AP HP, Dept Pediat Neurosurg, Paris, France
[2] Univ Paris 05, Necker EM Hosp, AP HP, Dept Visceral Pediat Surg, Paris, France
[3] Univ Paris 05, Necker EM Hosp, AP HP, Reference Ctr AnoRectal & Rare Pelv Anomalies MAR, Paris, France
[4] UPMC, cUMR7622, Paris 05, France
[5] CNRS, Paris 05, France
[6] Grp Hosp Pitie Salpetriere, Federat Neurol, 47-83 Blvd Hop, Paris 13, France
[7] Univ Paris 05, Necker EM Hosp, AP HP, Reference Ctr Chiari & Malformat Spine & Spinal C, Paris, France
[8] Univ Paris 05, Necker EM Hosp, AP HP, Inst Genet Dis IMAGINE, Paris, France