| I. BL Aug. 2019 | II. 3 M Nov. 2018 | III. 6 M Feb. 2019 | IV. 9 M May 2019 | V. 12 M Aug. 2019 | VI. 15 M Nov. 2019 | VII. 18 M Feb. 2020 | Not evaluated | VIII. 24 M Aug. 2020 | IX. 27 M Nov. 2020 | ANOVA |
Group E n = 7 | 8.4 ± 2.8 | 8.4 ± 3.5 | 8.7 ± 3.2 | 8.4 ± 3.1 | 8.6 ± 2.6 | 8.3 ± 2.5 | 8.6 ± 2.9 |
| 6.7 ± 2.1 | 7.4 ± 2.3 | ns |
Group F n = 15 | 7.7 ± 1.3 | 7.3 ± 1.4 | 7.5 ± 1.1 | 7.4 ± 2.6 | 8.6 ± 1.8 | 8.6 ± 2.7 | 7.7 ± 2.3 |
| 5.9 ± 1.7 | 6.3 ± 2.1 | V > VIII* VI > VIII* |