“…Thirteen studies (3,5,6,8,12,13,(15)(16)(17)(18)(19)(20)(21) reported on the rate of hematoma formation which ranged from 0-2% (3,5,6,12,15,16,20,21). A meta-analysis of 2,760 outpatients was performed and there were 8 total cases of hematoma formation (0.02%).…”