Text and Data Mining valid from 2019-04-25
Received: 6 January 2019
Accepted: 8 April 2019
First Online: 25 April 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Research Review Committee from Guangdong Dermatology Hospital. The participants were enrolled in the study after obtaining written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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