@base . a ; . a , ; "Journal of vocational health studies (Surabaya)" . a ; "2580-7161" ; . a ; "2580-7161" ; . "Indonesia" . a ; ; "20170722153300.0"^^ ; ; . a . a , , ; , , ; "Journal of vocational health studies" ; ; ; ; "2580-7161" ; ; ; "2580-7161" ; ; "2580-7161" ; "Journal of vocational health studies" , "Journal of vocational health studies (Surabaya)" ; . .