[1] Dept Publ Hlth & Epidemiol, ELKH DE Publ Hlth Res Grp, Debrecen, Hungary
[2] Univ Debrecen, Dept Publ Hlth & Epidemiol, Debrecen, Hungary
[3] Semmelweis Univ, Natl Lab Hlth Secur, Budapest, Hungary
[4] Univ Debrecen, Dept Family & Occupat Med, Debrecen, Hungary
[5] Semmelweis Univ, Dept Publ Hlth, Budapest, Hungary
[6] Univ Oklahoma HSC, Dept Neurosurg, Oklahoma City, OK USA
[7] Univ Oklahoma HSC, Dept Hlth Promot Sci, Oklahoma City, OK USA