1 Clinical Laboratory Department, Faculty of Medical Technology, University of Tobruk, Tobruk, Libya, National Centre for Disease Control, Tobruk, Libya, Libyan Medical Research Centre, Kambut, Tobruk, Libya.
2 National Centre for Disease Control, Tobruk, Libya.
3 Tuberculosis and Leprosy Control Programme, National Centre for Disease Control, Tripoli, Libya.
4 Clinical Laboratory Department, Faculty of Medical Technology, University of Tobruk, Tobruk, Libya.