Ruthirago, D., P. Julayanont, and S. Rassameehiran. “Acute Porphyrias and Porphyric Neuropathy”. The Southwest Respiratory and Critical Care Chronicles, Vol. 4, no. 15, July 2016, pp. 21-31, https://pulmonarychronicles.com/index.php/pulmonarychronicles/article/view/281.