1. Value of laboratory tests in the differential diagnosis of hypercalcemia;Boyd;Am J Med,1984
2. Impaired parathyroid hormone metabolism in patients with chronic renal failure;Freitag;N Engl J Med,1978
3. Sarcoidosis;James,1985
4. Angiotensin-I-converting enzyme and gallium scan in noninvasive evaluation of sarcoidosis;Nosal;Ann Intern Med,1979
5. The predictive value of serum angiotensin-converting enzyme activity in the differential diagnosis of hypercalcemia;Lufkin;Mayo Clin Proc,1983