Would you like a receipt? <a href=" http://aisxray.co.uk/buy-prednisone-online-now.pdf ">prednisone 10 mg 12 day dose pack</a> Dr. Cynthia Harden, a neurology professor at Hofstra-North Shore LIJ School of Medicine in Hempstead, New York, said it's possible the findings could be explained in part by something called "selection bias."