RT Journal Article SR Electronic T1 Introduction JF North Carolina Medical Journal JO N C Med J FD North Carolina Institute of Medicine SP 290 OP 290 DO 10.18043/ncm.63.6.290 VO 63 IS 6 A1 DeFriese, Gordon H. YR 2020 UL http://www.ncmedicaljournal.com/content/63/6/290.abstract AB