- A subject with a history of clinically significant renal, hepatic, cardiovascular, metabolic, neurologic, hematologic, ophthalmologic, respiratory, gastrointestinal, cerebrovascular, or other significant medical illness or disorder which, in the judgment of the investigator, could interfere with the study, or require treatment that might interfere with the study. Specific examples include (but are not limited to) insulin-dependent diabetes, hypertension being treated with beta blockers, active hepatitis, coronary artery disease, arrhythmia, stroke, severe rheumatoid arthritis, chronic open-angle glaucoma or posterior subcapsular cataracts, acquired immune deficiency syndrome (AIDS), or conditions that may interfere with respiratory function such as clinically diagnosed chronic obstructive pulmonary disease (COPD), chronic bronchitis, emphysema, bronchiectasis, cystic fibrosis, etc. Other conditions that are well-controlled and stable (eg, hypertension not requiring beta blockers) will not prohibit participation if deemed appropriate per the investigator's judgment.