1. Institute of Maternal and Child Research; School of Medicine; University of Chile; Santiago Chile
2. Pediatric Service; Hospital Base San José; Osorno Chile
3. Pediatric Urology Department; Hospital Clínico San Borja - Arriarán; Santiago Chile
4. Institute of Medical and Molecular Genetics (INGEMM); Hospital Universitario La Paz, IdiPAZ, UAM and CIBERER, ISCIII; Madrid Spain