title: Answer to IM-16-0459.
authors.affiliation: Department of Obstetrics and Gynecology, Clintec, Karolinska University Hospital, Huddinge, Stockholm.
authors.forename: P G
authors.initials: PG
authors.lastname: Lindqvist
authors.affiliation: Departments of Oncology and Cancer Epidemiology, Lund University Hospital, Lund, Sweden.
authors.forename: H
authors.initials: H
authors.lastname: Olsson