Which advtertising agencies currently handle television advertisement
campaigns for the following anti depressant medications.  Also, which
media production companies produce the actual advertisement for the
following medications:

Zoloft from Pfizer, Inc. (www.pfizer.com & www.zoloft.com)
Paxil from GlaxoSmithKline (us.gsk.com & www.paxil.com)
Lexapro from Forest Laboratories, Inc. (www.lexapro.com & www.frx.com)
Celexa from Forest Laboratories (www.celexa.com & www.frx.com)
Wellbutrin from GlaxoSmithKline (us.gks.com & www.wellbutrin.com)

If the specific medication does not currently have a television
campaign, knowing the agency that handles their print campaign will be
fine.

Thank you kindly for your help.