1. Seedbed in Perinatal Medicine. The Medical School, Pontificia Universidad Javeriana, Bogota, Colombia
2. Hospital Universitario San Ignacio, Bogota, Colombia
3. Department of Pathology, Institute of Human Genetics, the Medical School, Pontificia Universidad Javeriana, Bogota, Colombia
4. Department of Morphology, the Medical School, Pontificia Universidad Javeriana, Bogota, Colombia