... referral) maydepend on the nature of the condition, whether the refer-ral is for reasons of diagnosis and/or treatment, the pref-erence of the provider, and the relationship between the providers. ... evi-dence of efficacy/effectiveness for a given condition suchas musculoskeletal chest pain, that the path of referral forchest pain will depend on the nature of the condition and the urgency of the ... coordination of care within the health care system, whether for diagnostic consult,referral for treatment, or continuity of care in the overall management of the patient's total care plan. The potentialimplications...