All articles in this issue include authors from three universities in INDONESIA (Department of Medical Electronics Technology, Poltekkes Kemenkes Surabaya; Department of Environmental Health, Poltekkes Kemenkes Surabaya; Department of Epidemiology, Biostatistics, and Health Promotion and Behavioral Sciences, Faculty of Public Health, Airlangga University) and three universities from other countries (Armed Forces Post Graduate Medical Institute, Pakistan; Department of Electronics and Telecommunication Engineering, Jadavpur University, India; Aligarh Muslim University, Aligarh, Uttar Pradesh, India ).