Increase of epithelium condition Steady state of epithelium condition Decrease of epithelium condition OCS + CCS group 15/23 (62.5 %) 6/23 (26 %) 2/23 (8.5%) OCS group 6/9 (66.7 %) 2/9 (22.2 %) 1/9 (11.1%) CCS group 9/14 (64.3%) 4/14 (28.5%) 1/14 (7.2%)

Table 4: Condition of the epithelium.