Sorsavanh, Thepphouthone https://orcid.org/0000-0002-8610-2635
Liu, Chang https://orcid.org/0000-0002-0515-5226
Yamamoto, Goshiro https://orcid.org/0000-0002-2014-7195
Mori, Yukiko https://orcid.org/0000-0001-9486-9505
Kobayashi, Shinji https://orcid.org/0000-0001-5783-2631
Kuroda, Tomohiro https://orcid.org/0000-0003-1472-7203
Article History
Received: 31 December 2024
Accepted: 31 August 2025
First Online: 26 September 2025
Declarations
:
: The National Ethics Committee for Health Research Laos (NECHR) reviewed and approved this study under approval number 033/NECHR on April 1, 2024.
: Informed consent was obtained from the legal guardians.
: The authors affirm that the human research participants provided informed consent for the publication of the images in Figs. 1, 2, 3, 4, 5, 6 and 7.
: The authors declare no competing interests.