SYED, E.-U.; NAQVI, H.; HUSSEIN, S. A. FREQUENCY, CLINICAL CHARACTERISTICS AND CO-MORBIDITIES OF ATTENTION DEFICIT HYPERACTIVITY DISORDER PRESENTING TO A CHILD PSYCHIATRIC CLINIC AT A UNIVERSITY HOSPITAL IN PAKISTAN. Journal of Pakistan Psychiatric Society, v. 3, n. 02, p. 74-77, 31 Dec. 2006.