Ankur, Ankur, Rampure M Dilip, and Irshad Hussain Askari. “Assessment of Conventional Autonomic Function Tests in Patients With Acute Intermittent Porphyria”. International Journal of Clinical and Experimental Physiology 6, no. 4 (December 28, 2019): 118-121. Accessed April 20, 2021. http://ijcep.phcog.interactivedns.com/index.php/ijcep/article/view/459.