Viet-Quoc, N.P. et al. 2016. Drug Delirium Scale (DDS): A Tool to Evaluate Drugs as a Risk Factor for Delirium. International Journal of Innovative Research in Medical Science. 1, 06 (Aug. 2016), 232 to 237. DOI:https://doi.org/10.23958/ijirms/vol01-i06/02.