- Correspondence to Dr Agnieszka M Rygiel, Institute of Mother and Child, Kasprzaka 17a, Warsaw 01-211, Poland;
- Received January 21, 2017
- Accepted February 5, 2017
- First published March 3, 2017.
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.