- Correspondence to Dr. Yiyi Xu, Division of Occupational and Environmental Medicine, Laboratory Medicine, Lund University, Lund 22100, Sweden;
- Received December 27, 2017
- Revised April 9, 2018
- Accepted May 3, 2018
- First published May 30, 2018.
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.