Gijsbers, ADayal, A KThomas, KSeshadri, M SCherian, A M1986-11-012009-05-301986-11-012009-05-301986-11-01Gijsbers A, Dayal AK, Thomas K, Seshadri MS, Cherian AM. Sarcoidosis and ACE assay. Journal of the Association of Physicians of India. 1986 Nov; 34(11): 823-4http://imsear.searo.who.int/handle/123456789/88725engHumansPeptidyl-Dipeptidase A --bloodSarcoidosis --diagnosisLetter