<qa>  What is the name of the surgical procedure that is required to be performed within 28 days prior to- Major surgical procedure, open biopsy, or significant traumatic injury within 28 days prior to Day 0, or anticipation of need for major surgical procedure during the course of the study; biopsies other than rectal cancer within 7 days prior to Day 0; placement of a vascular access device within 7 days prior to Day 0 