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Authors
Gyeltshen, Tshewang
Penjor, Tshering
Dorji, Lham
Tshering, Lobzang
Dorji, Kinley
Subedi, Bhim Nath
Tshering, Dorji
Xu, Yvonne Yiru
Dorji, Gampo
Gueye, Ghislain Nono
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Article History
Received: 7 March 2021
Accepted: 7 October 2021
First Online: 19 October 2021
Declarations
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: Ethics approval has been granted by the Research Ethics Board of Health (REBH), Ministry of Health, Royal Government of Bhutan, approval number <i>Ref. No. REBH/Approval/2019/004</i><b><i>.</i></b> As this study is a covert interventional trial design involving the study participants with trained proxy customers. Any information of study to the participants may have compromised the study outcome and expected high level of bias. For this reason, waiver for consent was granted by the Research Ethics Board of Health. All methods were carried out in accordance with relevant guidelines and regulations as enshrined in the Helsinki Declaration of 1964.
: Not Applicable.
: None.
