. 2018 Jul 20;12(6):780–792. doi: 10.1111/irv.12575
© 2018 The Authors. Influenza and Other Respiratory Viruses Published by John Wiley & Sons Ltd.
This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Flow diagram of the literature search