Seroprevalence of brucellosis among exposed agro-pastoral communities in southern Saudi Arabia oleh Ahmed M. Al-Hakami, Abdulah J. Alqahtani, Riyad A. Moosa, Sultan K. Kadasah, Talal Y. Gofashe, Amer F. Binzafrah, Abdulrahman M. Almobty, Ihab Abdulrahim, Abdullah M. Alkahtani, Shehata F. Shehata, Mohamed E. Hamid