The study was a randomized controlled trial approved by the Ethics Review Committee for Research Involving Human Research Subjects of the Health Science Group of Chulalongkorn University (COA No. 082/2557).
The study was a randomized controlled trial approvedby the Ethics Review Committee for Research InvolvingHuman Research Subjects of the Health Science Groupof Chulalongkorn University (COA No. 082/2557).