RT Journal Article SR Electronic T1 Safety, standardization, and surgical innovation: lessons from the development of sentinel node biopsy in gynecologic oncology JF International Journal of Gynecologic Cancer JO Int J Gynecol Cancer FD BMJ Publishing Group Ltd SP 656 OP 657 DO 10.1136/ijgc-2021-002607 VO 31 IS 5 A1 Charles F Levenback YR 2021 UL http://ijgc.bmj.com/content/31/5/656.abstract AB