 Disqualifying Conditions A candidate subject is excluded if there is a disqualifying condition. Examples of disqualifying conditions are hepatic or renal failure defined by serum creatinine more than 1.5 gdL, symptomatic congestive heart failure, severe anemia, psychosis, refractory ventricular arrhythmias, and symptomatic coronary heart disease. Patients are excluded from further participation if the results of the intake evaluation lead to a diagnosis of a secondary form of CAF, such diabetic autonomic neuropathy. Candidate subjects who are unable to give their own consent and who do not have an existing DPA in place are excluded. Pregnant or lactating women are excluded from the study. 