Everyone handles the stress and disappointment of setbacks differently. When you work in the medical field, there is less room for error, and those setbacks can feel amplified. Misdiagnosing a patient, not identifying a medical contraindication, or prescribing the wrong treatment can impact one's career. Not to mention, your grades greatly determine your future success. Discuss with the interviewers how you typically cope with such setbacks. The key is applying the lessons learned from your failures to shore up your chances for success later.