Horea Gozar1, Mircea Ardelean2, Simona Gurzu3. 1. Department of Pediatric Surgery, University of Medicine and Pharmacy of Târgu Mureş, Târgu Mureş, Romania. 2. Department of Pediatric Surgery, Paracelsus Medical University of Salzburg, Salzburg, Austria. 3. Department of Pathology, University of Medicine and Pharmacy of Târgu Mureş, 38 Ghe Marinescu Street, 540139 Târgu Mureş, Romania.