Statistics from Altmetric.com
Provenance: not commissioned; externally peer reviewed
MN and IS contributed equally and should be considered co-first authors.
IG and CF contributed equally and should be considered co-last authors.
▸ Additional material is published online only. To view please visit the journal online (http://dx.doi.org/10.1136/vr.103425).
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.