1. Kaiser Permanente Cancer Center at Los Angeles Medical Center, Los Angeles, California (S.E.L.)
2. Department of Medicine, University of Otago–Wellington, Wellington, New Zealand (A.R.)
3. Department of General Surgery, Ospedale Civile S. Maria della Misericordia–Urbino, Urbino, Italy (M.D.)
4. Department of Obstetrics and Gynecology, Ospedale Civile S. Maria della Misericordia–Urbino, Urbino, Italy (E.F.)
5. Department of Prenatal Diagnosis, Altamedica–Artemisia Fetal–Maternal Medical Centre, Rome, Italy (F.P.).