Shek, Ka Lai
Dietz, Hans Peter
Article History
First Online: 18 March 2019
Compliance with Ethical Standards
:
: Ka Lai Shek reports an unrestricted educational grant from GE Medical during the time of this study and Peter Hans Dietz also reports honoraria and flight costs from GE Medical. Otherwise, the authors declare no other conflict of interest.
: This article does not contain any studies with human or animal subjects performed by any of the authors.