Funding for this research was provided by:
Japan Society for the Promotion of Science (25461509; 26460743; 18K08427)
Received: 24 December 2018
Accepted: 9 June 2019
First Online: 4 July 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committees of National Hospital of Dermatology and Venereology, Hanoi, Vietnam (No. 113335143) and Kanazawa University, Japan (No. 1612–2). The written informed consent was obtained from all participants. All procedures were performed in accordance with the declaration of Helsinki.
: All participants gave their written informed consent for the publication of this study.
: The authors declare that they have no competing interest.