1. Institut Clinic of Gynaecology, Obstetrics and Neonatology; Hospital Clínic-Institut d′Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Faculty of Medicine; University of Barcelona; Barcelona; Spain
2. Department of Pathology; Centre de Recerca en Salut Internacional de Barcelona (CRESIB); Hospital Clínic; Faculty of Medicine; University of Barcelona; Barcelona; Spain