The effect of smoking on cognition as measured by Cambridge Neuropsychological Test Automated Battery (CATNAB) and brain-derived neurotrophic factor plasma levels

From the Department of Biomedical Sciences (Al-Mshari), College of Medicine, King Faisal University, Al-Ahsa; from the Department of Physiology (AlSheikh, Latif), College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia; and from the Department of Physiology (Mumtaz), Dental College, HITEC-Institute of Medical Sciences, Taxilla, Pakistan

From the Department of Biomedical Sciences (Al-Mshari), College of Medicine, King Faisal University, Al-Ahsa; from the Department of Physiology (AlSheikh, Latif), College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia; and from the Department of Physiology (Mumtaz), Dental College, HITEC-Institute of Medical Sciences, Taxilla, Pakistan

From the Department of Biomedical Sciences (Al-Mshari), College of Medicine, King Faisal University, Al-Ahsa; from the Department of Physiology (AlSheikh, Latif), College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia; and from the Department of Physiology (Mumtaz), Dental College, HITEC-Institute of Medical Sciences, Taxilla, Pakistan

From the Department of Biomedical Sciences (Al-Mshari), College of Medicine, King Faisal University, Al-Ahsa; from the Department of Physiology (AlSheikh, Latif), College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia; and from the Department of Physiology (Mumtaz), Dental College, HITEC-Institute of Medical Sciences, Taxilla, Pakistan