http://www.cdc.gov/mmwr/preview/mmwrhtml/00039315.htm

To determine the sources of residential CO poisonings in Connecticut, the Connecticut Department of Public Health (CDPH) surveyed persons with cases of CO poisoning during November 1993-March 1994. This report presents the survey findings. MMWR 44(41);765-7 Publication date: 10/20/1995.