ERAS and cancer: Three studies reported long-term cancer-specific survival (CSS) [11, 12, 33], and 4 studies reported long-term disease-free survival (DFS) [16, 29–31].The follow-up time ranged from 10 months to 10 years, 1 study showed that ERAS could improve CSS [33] and DFS [30], while the others found no differences.