PRP articles on PRP treatment for severe PF

I get Google alerts on plantar fasciitis and these articles were in today's digest, concerning platelet rich plasma. These 2 articles say it has now been shown to be more effective for severe PF than cortisone shots.

http://www.orthosupersite.com/view.aspx?rid=92293

http://www.doctorslounge.com/index.php/news/pb/26588

I hope these articles help someone.