This issue has been available online since 15 th January 2021 for the regular issue of  2021. All articles in this issue (5 original research articles) were authored/co-authored by 11 authors from  5  countries (China,  Malaysia, Cambodia,Saudi arabia and Iraq)

This issue has been available online since 15 th January 2023 for the regular issue of  2023. All articles in this issue (16 original research articles) were authored/co-authored by 40 authors from  12  countries (China, Cambodia, India, USA, Turkey, Mexico, Nigeria, Pakistan, Philippines, Uganda, Lebanon  and Iraq)

This issue has been available online since 15 th January 2022 for the regular issue of  2022. All articles in this issue (5 original research articles) were authored/co-authored by 13 authors from  3  countries (Nigeria, Thailand and Iraq)