"Despite advances in medicine occurring on a daily basis, physicians are slow to change
their practices. Many different interventions have been studied... (however) physicians
rely on a core knowledge base acquired in medical school and through subsequent
experiential learning. Much of what is practiced and taught in medicine is based on
plausible theory, but in some cases there is no direct evidence to support it.
Some practices are grandfathered in with no questioning as to the validity
of what is taught or practiced." JABFP 1999; 12(02): 1202-07.