- Correspondence to Dr Maureen K Baldwin, Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, OR 97239, USA;
- Received November 25, 2020
- Revised March 1, 2021
- Accepted March 15, 2021
- First published March 31, 2021.
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.