WASHINGTON, April 21 -- The International Monetary Fund issued the following transcript of press briefing by Olivier Blanchard with Jorg Decressin and Abdul Abiad: MR. MURRAY: Good day. I'm William Murray, Chief of Media Relation at the IMF, and this is a live, on-the-record press conference on the latest World Economic Outlook from the IMF. Joining me today is Olivier Blanchard, Economic Counsellor and Director of the Research Department; Jorg Decressin, Assistant Director of Research; Pe  more