1. Department of Obstetrics and Gynecology, CUF Descobertas Hospital, Lisbon, Portugal
2. Department of Immunology, Chronic Diseases Research Center (CEDOC), Faculty of Medical Sciences, NOVA Medical School, Lisbon, Portugal
3. Centro de Medicina Laboratorial Germano Sousa, Lisbon, Portugal
4. Department of Clinical Pathology, Hospital Prof. Fernando Fonseca, E.P.E., Amadora, Portugal
5. Obstetrics and Gynecology, Private Medical Clinic, Lisbon, Portugal
6. Department of Immunoallergy, CUF Descobertas Hospital, Lisbon, Portugal