Researchers associated with the American Society for Aesthetic Plastic Surgery (ASAPS) recently gathered information on 687 patients who had received Botox and/or dermal filler treatment. 
The full results (in an MS Word doc) are available here; some of the most noteworthy findings are as follows:
 - Most respondents described themselves as healthy individuals; 95 percent said they [...]

Officials from the Food and Drug Administration met in November with a group of outside experts to review complications that have been reported in association with cosmetic dermal filler injections.
Over the last six years, there have been roughly 900 reports of wrinkle filler issues.  Juvederm, Restylane, Radiesse and other new offerings are products that fall [...]