III. To estimate the differences between RRC and ORC in terms of the following cost-related outcomes: operation room time; number of disposables used; pharmacy costs; length of hospital stay; admission to intensive care unit (ICU) prior to discharge & length of stay in ICU; number of hospital readmissions within 30 and 90 days (3 months); necessary tests/procedures to treat complications during hospitalization and within 30 and 90 days.