yousef khader department of community medicine, public health and family medicine, faculty of medicine, jordan university of science and technology, irbid, jordan. mostafa abdelrahman department of allied medical sciences, faculty of applied medical sciences, jordan university of science and technology, irbid, jordan. nour abdo department of community medicine, public health and family medicine, faculty of medicine, jordan university of science and technology, irbid, jordan. samah awad department of pediatrics and neonatology, faculty of medicine, jordan university of science and technology, irbid, jordan. munjed al-sharif school of natural resources engineering and management, german jordanian university, amman, jordan. ahmed elbetieha department of applied biological sciences, faculty of science and arts, jordan university of science and technology, ibrid, jordan.

atefeh vaezi department of community medicine, school of medicine, medical university of isfahan, isfahan, iran ladan haghighi department of obstetrics and gynecology, akbar-abadi hospital, iran university of medical sciences, iran farzaneh beigmohammadi department of community medicine, iran university of medical sciences tehran, iran marzieh nojomi department of community medicine, school of medicine, preventive medicine and public health research center, iran university of medical sciences, tehran, iran

Ahmed Elbetieha, Mazen Malkawi, Mostafa Abdelrahman, Munjed Al-Sharif, Nour Abdo, Samah Awad Yousef Khader,

Paula M Lantz James S House Richard P Mero David R Williams