1. Trajectories of Scores on a Screening Instrument for PTSD Among World Trade Center Rescue, Recovery, and Clean-Up Workers Maslow, Carey B.; Caramanica, Kimberly; Welch, Alice E.; Stellman, Steven D.; Brackbill, Robert M.; Farfel, Mark 2015 Articles Post-traumatic stress disorderMedical screeningSeptember 11 Terrorist Attacks (2001)EpidemiologyPublic healthMental health