History
Please read more about PDB versioning on our help page.
| Version | Date | Type | |
| 1-0 | 1990-04-15 | Initial release | No files available. |
| 1-1 | 2008-03-03 | Version format compliance | No files available. |
| 1-2 | 2011-07-13 | Version format compliance | No files available. |
| 1-3 | 2012-02-29 | Database references | No files available. |
| 1-4 | 2017-11-29 | Derived calculations, Other |
