. 2018 Oct 8;74(3):518–526. doi: 10.1111/all.13593
© 2018 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd.
This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.
Figure 1.
Study flowchart