Text and Data Mining valid from 2018-05-10
Received: 18 July 2017
Accepted: 27 April 2018
First Online: 10 May 2018
Ethics approval and consent to participate
: Signed informed consent was obtained from parents of patients for scientific purposes. The study protocol was reviewed and approved by the Ethical Committee of the Chang Gung Memorial Hospital, Taoyuan, Taiwan (100-2964B) and the procedures followed adhered to the World Medical Organization Declaration of Helsinki.
: The authors declare that they have no competing interests.
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