http://www.birthmarks.com/Birthmarks...AQ%20sheet.pdf
Okay, let's see if that link works...
oprichard, I found this brochure from cynergy at Birthmarks.com. It says that PDL should be exhausted before the cynergy laser is introduced. Additionally, it mentions that it is not recommended for children unless the PWS is not responding to PDL.
Hope this helps! I found it informative.