This issue has been available online since 3rd November 2022 for the regular issue of December 2022. All articles in this issue (10 original research articles) were authored/co-authored by 23 authors from 12 affiliations and four countries (Indonesia, Malaysia, Spain, and China).

This issue has been available online since 17th June 2022 for the regular issue of June 2022. All articles in this issue (10 original research articles) were authored/co-authored by 36 authors from 8 affiliations and two countries (Indonesia and Thailand).

This issue has been available online since 18th December 2021 for the regular issue of December 2021. All articles in this issue (10 original research articles) were authored/co-authored by 31 authors from 7 affiliations and one country (Indonesia).

This issue has been available online since 4th June 2021 for the regular issue of June 2021. All articles in this issue (10 original research articles) were authored/co-authored by 26 authors from 13 affiliations and one country (Indonesia).