| Grade 0 No (%) | Grade 1 No (%) | Grade 2 No (%) | Grade 3 No (%) | P-value |
1) At 12 Months of Radiotherapy | 48 (88.9%) | 5 (9.2%) | 1 (1.9%) | 0 (0%) | P = 0.695n.s |
2) At 24 Months of Radiotherapy | 51 (94.4%) | 3 (5.6%) | 0 (0%) | 0 (0%) |