Yin, B., T. Ye, X. Liu, R. Wan, L. Gu, and G. Zong. “Effects of Melatonin for Delirium in Elderly Acute Heart Failure Patients: A Randomized, Single-Center, Double-Blind, and Placebo-Controlled Trial”. The Heart Surgery Forum, vol. 25, no. 1, Jan. 2022, pp. E037-E041, doi:10.1532/hsf.4325.