Backing out of signed employment contract

May be having a change of heart 4 months later and I don't see it it in the contract far but if I signed an employee contract through a big hospital system would I be able to back out without any legal repercussion? Recruiters used were internal through the hospital system. No sign on bonuses received until first paycheck.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Psychiatry Source Type: forums