RT Journal Article SR Electronic T1 Evaluation of trends in continuous peripheral nerve block utilization for total knee arthroplasty within and outside the Veterans Affairs Healthcare System JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2021-102731 DO 10.1136/rapm-2021-102731 A1 Harika Nagavelli A1 Edward R Mariano A1 Vijay Krishnamoorthy A1 Neil D. Ray A1 Hung-Lun Hsia A1 Alan R. Ellis A1 Stavros G Memtsoudis A1 William E Bryan A1 Marc J Pepin A1 Karthik Raghunathan YR 2021 UL http://rapm.bmj.com/content/early/2021/06/01/rapm-2021-102731.abstract AB