Funding for this research was provided by:
Boehringer Ingelheim Korea Ltd
Received: 3 May 2018
Accepted: 25 April 2019
First Online: 6 June 2019
Ethics approval and consent to participate
: This study received ethics approval from following three IRB committee’s.Seoul Saint Mary’s Hospital IRB Secretariat(ED14144)Korea University Medical Center at Anam IRB committee(KUGH14146)Korea University Medical Center at Guro IRB committee(KC14QIMI0470)This study received a statement on consent to participate under the ‘Ethics, consent and permissions’ heading.
: Not applicable
: The authors declare that they have no competing interest.
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