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Clinical characteristics of patients included.
| Characteristic | Value |
|---|---|
| Age (months) | 5.8 |
| Gender | |
| Male | 191 |
| Female | 533 |
| Lesion location | |
| Head and neck | 421 |
| Extremities | 165 |
| Trunk | 138 |
| Lesion size (cm2) | 4.42 |
| Gestational age | |
| Tern born (≧37 weeks) | 573 |
| Born prematurely (< 37 weeks) | 151 |
| Progesterone use during pregnancy | |
| Yes | 83 |
| No | 641 |
| Duration of treatment (months) | 6.7 |
| Follow-up period (months) | 6.4 |
