- Scheduled to undergo 4 or more cycles of chemotherapy (with or without past chemotherapy treatment); NOTE: Acceptable chemotherapy regimens are those that have all drugs infused on the first day of the chemotherapy cycle over a period =< 8 hours; EXCEPTION: Continuous 5-FU-containing regimens (such as FOLFOX6 and FOLFIRI) are allowed as both the 5-FU bolus as well as the oxaliplatin and irinotecan administration is completed on day 1 of chemotherapy