“…Out of the 48 studies ( 4 , 23 , 35 – 80 ), 37 studies ( 35 – 37 , 39 – 49 , 51 , 52 , 54 – 66 , 68 , 69 , 72 – 74 , 76 , 78 , 79 ) had reported diagnostic criteria for stroke and 35 ( 4 , 35 – 39 , 41 – 53 , 55 , 57 – 60 , 62 – 65 , 67 – 70 , 74 , 76 , 77 ) for aphasia. In 43 studies ( 4 , 23 , 35 – 52 , 54 – 65 , 67 – 76 , 78 , 80 ), the age of the patient was reported as mean ± standard deviation, while two studies ( 53 , 66 ) reported specific age information for each patient, and the age range was reported in two studies ( 77 , 79 ). Except for two studies ( 50 , 59 ) that failed to disclose the post-stroke time, the mean course of disease for patients in the other 44 studies ( 4 , 23 , 35 – 49 , 51 , 52 , 54 – 58 , 60 – 65 , 67 – 80 ) ranged from 6.9 days to 4.46 years, and two studies ( ...…”