- Correspondence to Dr Annika Idahl, Department of Clinical Sciences, Obstetrics and Gynecology, Umeå University, Umeå SE-901 87, Sweden;
- Received January 14, 2015
- Revised April 7, 2015
- Accepted April 9, 2015
- First published April 28, 2015.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.