Levy, Ariel
Chen, Robert
Article History
First Online: 2 April 2016
Compliance with Ethical Standards
:
: Ariel Levy declares no conflict of interest.Robert Chen received research grant from Medtronic Inc, honorarium from Allergan, and research grant and honorarium from Merz.
: This article does not contain any studies with human or animal subjects performed by any of the authors.
Free to read: This content has been made available to all.