Surkan, Megan, Naheed Rajabali, Sean M. Bagshaw, Xiaoming Wang, and Darryl Rolfson. “Interrater Reliability of the Clinical Frailty Scale by Geriatrician and Intensivist in Patients Admitted to the Intensive Care Unit”. Canadian Geriatrics Journal 23, no. 3 (September 1, 2020): 223-229. Accessed November 29, 2020. https://cgjonline.ca/index.php/cgj/article/view/398.