[1] Ajman Univ, Coll Med, POB 346, Ajman, U Arab Emirates
[2] Ajman Univ, Ctr Med & Bioallied Hlth Sci Res, Ajman, U Arab Emirates
[3] Univ Khartoum, Dept Physiol, Fac Med, Khartoum, Sudan
[4] Al Ain Univ, Coll Pharm, Abu Dhabi, U Arab Emirates
[5] Milton Keynes Univ Hosp NHS Fdn Trust, Dept Med & HIV Metab Clin, Milton Keynes, Bucks, England
[6] Univ Med Sci & Technol, Dept Pathol, Fac Med, Khartoum, Sudan