1. Statistical Abstract of the United States, 1999;United States Bureau of the Census, U.S. Department of Commerce,1999
2. Suicide statistics of dentists in Iowa, 1968 to 1980;Simpson;JADA,1983
3. Suicide: not for dentists only;Rothman;J Mo Dent Assoc,1981
4. Suicide and the family physician: clinical assessment of suicide risk;Mareth;Tex Med,1977
5. Stress in dentistry: it can kill you;Lang-Runtz;J Can Dent Assoc,1984