1. Impact of 9/11-related chronic conditions and PTSD comorbidity on early retirement and job loss among World Trade Center disaster rescue and recovery workers Yu, Shengchao; Brackbill, Robert M.; Locke, Sean; Stellman, Steven D.; Gargano, Lisa M. 2016 Articles ComorbidityPost-traumatic stress disorderEarly retirementUnemploymentRescue workSeptember 11 Terrorist Attacks (2001)EpidemiologyPublic health