TY - STAND AU - S. Hennessy AU - W. Bilker AU - C. Leonard AU - J. Chittams AU - C. Palumbo AU - J. Karlawish AU - Y. Yang AU - E. Lautenbach AU - W. Baine AU - J. Metlay BT - J Clin Epidemiol DO - 10.1016/j.jclinepi.2006.11.022 M1 - 9 PY - 2007 SP - 911 EP - 8 T2 - J Clin Epidemiol TI - Observed association between antidepressant use and pneumonia risk was confounded by comorbidity measures VL - 60 SN - 0895-4356 (Print) 0895-4356 ER -