[Karras, Elizabeth; Tu, Xin M.; Stephens, Brady] US Dept Vet Affairs, VISN Ctr Excellence Suicide Prevent 2, 400 Ft Hill Ave, Canandaigua, NY 14424 USA.
[Karras, Elizabeth; Tu, Xin M.] Univ Rochester, Dept Psychiat, Rochester, NY USA.
[Tu, Xin M.; Lu, Naiji] Univ Rochester, Dept Biostat & Computat Biol, Rochester, NY USA.
[Zuo, Guoxin] Cent China Normal Univ, Sch Math & Stat, Wuhan, Peoples R China.
[Draper, John] Link2Hlth Solut Inc, Natl Suicide Prevent Lifeline, New York, NY USA.