1. Department of Obstetrics and Gynecology, IIS-FJD Fundación Jiménez Díaz University Hospital, Madrid, Spain
2. Surgery Department, Autónoma University of Madrid, Madrid, Spain
3. Cell Therapy Laboratory, Health Research Institute, IIS-FJD Fundación Jiménez Díaz University Hospital, Madrid, Spain
4. Department of Surgery, IIS-FJD Fundación Jiménez Díaz University Hospital, Madrid, Spain
5. Department of Colorectal Surgery, La Paz University Hospital, Madrid, Spain