Funding for this research was provided by:
Universitas Andalas (10/UN.16.17/PP.PGB/LPPM/2018)
Received: 7 November 2019
Accepted: 10 March 2020
First Online: 18 May 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the declaration of Helsinki. All procedures involving human subjects were approved by the Ethics Committee of Faculty of Medicine, Andalas University (No.005/KEP/FK/2019). Thorough explanation of study objectives and protocol were given 1 week before the health examinations and written informed consent was obtained from each participant.
: Not applicable.
: The authors declare that they have no competing interests.