Zhang, Qian http://orcid.org/0000-0003-4440-1757
Witter, Dick J.
Bronkhorst, Ewald M.
Creugers, Nico H. J.
Funding for this research was provided by:
Radboud University Medical Center
Article History
Received: 15 January 2018
Accepted: 25 April 2018
First Online: 7 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study were in accordance with the ethical standards of the regional research ethics committee and with the 1964 Helsinki Declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.