Can Belief Cause Pain Killing Effects?

Pain killing placibas work because the person expects to feel a reduction in pain. This expectation causes their brain to produce its own natural pain killors, which then reduced the pain. Studies at the university of british columbia and canada have shown that believing applicibo is an anti parkinson's drug causes the brain to produce neuro transmitter dopemine here. Some documented spontaneous remissions in patience may have occurred because belief or faith mobilized the immune system. Can we harness the plicibo effect in the department of cardi vascular surgery at the heart centre of the university of marburg?