Smokeless tobacco use and its relation to panic disorder, major depression, and posttraumatic stress disorder in American Indians.
Sawchuk CN, Roy-Byrne P, Noonan C, Bogart A, Goldberg J, Manson SM, Buchwald D. Smokeless tobacco use and its relation to panic disorder, major depression, and posttraumatic stress disorder in American Indians. Nicotine Tob Res. 2012 Sep; 14(9):1048-56.