Funding for this research was provided by:
Pfizer Pharmaceuticals Korea
Article History
Received: 5 January 2017
Accepted: 6 August 2018
First Online: 13 August 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Review Boards of Kangdong Sacred Heart Hospital, Maryknoll Medical Center, Seoul National University Hospital, Korea University Anam Hospital, Konkuk University Medical Center, Yeungnam University Medical Center, the Catholic University of Korea Seoul St. Mary’s Hospital, Kyungpook National University Hospital, Keimyung University Dongsan Medical Center, Gangnam Severance Hospital, Pusan National University Hospital, Samsung Medical Center, Asan Medical Center, and the Catholic University of Korea Uijeongbu St. Mary’s Hospital. The evidence of a personally signed and dated informed consent document indicating that the subject had been informed of all pertinent aspects of the study. For patients aged less than 19 years, informed consent was obtained from both patient and parents or guardians.
: Not applicable
: HJJ and JY have no competing interests. HEL has disclosed that she is an employee of Pfizer Pharmaceuticals Korea Ltd.
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