Fig. 4

a. Sensitivity analysis of PPD at 6-months in terms of the following: 1.2.1 initial PPD 4-6 mm; 1.2.2 initial PPD ≥6 mm. b. Sensitivity analysis of CAL at 3-months in terms of the following: 2.1.1 initial PPD 4-6 mm; 2.1.2 initial PPD ≥6 mm. c. Sensitivity analysis of CAL at 6-months in terms of the following: 2.2.1 initial PPD ≤ 4 mm; 2.2.2 initial PPD 4-6 mm; 2.2.3 initial PPD ≥6 mm