The following is a dichotomous key to understanding your CO poisoning. It will take you several minutes for you to answer all of the questions / make all of the choices. It may be necessary for you to review other parts of COHQ, fill out questionnaires, and communicate with Dr. Penney. For further information, you are encouraged to contact the webmaster.
Questions, #1 -
| Were you exposed to CO? Do you have good reason to believe you inhaled CO at some time in the past?
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