Collaborative Stage Data Set - Revised 10/25/2011 FINAL
| CS Extension | CS SSF 2 Ulceration 000 | CS SSF 2 Ulceration 001 | CS SSF 2 Ulceration 010 | CS SSF 2 Ulceration 988 | CS SSF 2 Ulceration 999 |
| 100 | T1a | ERROR | T1b | ERROR | T1NOS |
| 200 | T1a | ERROR | T1b | ERROR | T1NOS |
| 300 | T1b | ERROR | T1b | ERROR | T1b |
| 310-380 | T1NOS | ERROR | T1NOS | ERROR | T1NOS |
| 400 | T1NOS | ERROR | T1b | ERROR | T1NOS |
| 500 | T1b | ERROR | T1b | ERROR | T1b |
| 800 | T1b | ERROR | T1b | ERROR | T1b |
| 999 | T1b | ERROR | T1b | ERROR | T1b |