Affiliation: | 1.Department of Health Sciences,Mid Sweden University,Sundsvall,Sweden;2.School of Health Sciences,?rebro University,?rebro,Sweden;3.Higher School of Public Health,Al-Farabi Kazakh National University,Almaty,Kazakhstan;4.Islamic University of Gaza,Gaza Strip,Palestine;5.Professor (Emiratus), Karolinska Institutet,Stockholm,Sweden |