Table 1. General characteristic of study participants.

* p-value is statistically significant  

Characteristics	Patients (n=125), mean±SD	Controls (n=75), mean±SD	p-value*
Age (years)	27.5±10.2	26.0±9.9	0.31
Body mass index (kg/m2)	25.1±5.1	24.2±2.9	0.16
Zinc (µg/dl)	76.3±19.5	85.7±10.9	0.002