Funding for this research was provided by:
Faculty of Tropical Medicine, Mahidol University (R2R)
Text and Data Mining valid from 2020-03-03
Received: 19 September 2019
Accepted: 18 February 2020
First Online: 3 March 2020
Ethics approval and consent to participate
: This study protocol was approved by the Ethics Committee for Research in Human Subjects, Department of Disease Control, Ministry of Public Health, under Royal Thai Government. The reference number is 1/60-004 and FWA number is 00013622. The aggregate data of this study was generated as part of national routine surveillance system of communicable disease. Anonymized data was obtained.
: Not Applicable.
: The authors declare that they have no competing interests.