Fig. 1From: Changes in subjective symptoms and allergy state among medical students exposed to low-level formaldehyde 6 months after completion of a gross anatomy dissection courseChanges in prevalence of subjective symptoms before, during, and 6 months after gross anatomy dissection course. *Significant difference between prevalence before or during the course and 6 months after the course (P < 0.05). **Significant difference between prevalence before or during the course and 6 months after the course (P < 0.01)Back to article page