The clinical database lists data for the following measurements:
1. Forced expiratory volume in 1 second (FEV1)
2. Forced vital capacity (FVC)
3. Εxpiratory ratio, Tiffenau index (%FEV1/FVC)
4. Forced expiratory flow at the middle half of the FVC (FEF 25-75)
5. Exhaled carbon monoxide
6. Serum for TOS/TOC
7. Serum for Vitamin E
8. Urine cotinine level
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