Burden M, Keniston A, Wallace MA, Busse JW, Casademont J, Chadaga SR, Chandrasekaran S, Cicardi M, Cunningham JM, Filella D, Hoody D, Hilden D, Hsieh MJ, Lee YS, Melley DD, Munoa A, Perego F, Shu CC, Sohn CH, Spence J, Thurman L, Towns CR, You J, Zocchi L, Albert RK. Opioid Utilization and Perception of Pain Control in Hospitalized Patients: A Cross-Sectional Study of 11 Sites in 8 Countries. J Hosp Med. 2019 Dec 1;14(12):737-745. PubMed PMID: 31339840