Molecular characterization of clinical and environmental carbapenem resistant Acinetobacter baumannii isolates in a hospital of the Eastern Region of Saudi Arabia oleh Arif Al-Hamad, Tibor Pal, Hussam Leskafi, Hussein Abbas, Heba Hejles, Fatimah Alsubikhy, Dania Darwish, Akela Ghazawi, Agnes Sonnevend