All articles in this issue include authors from universities in Indonesia (Poltekkes Kemenkes Surabaya, Surabaya, Indonesia; Department of Midwifery, Institute of Technology Science and Health Insan Cendekia Medika Jombang, Jombang; Polytechnic of Ministry of Health Yogyakarta; ) and one University from overseas (Center for Environmental and Population Health School of Meidcine and Dentistry Griffith University Australia)