BRIEF — Moody's Changes Greece's Outlook To Positive From Stable, Affirms Baa3 Ratings

Sept 18 (Reuters) — Moody's: * MOODY'S: MOODY'S RATINGS CHANGES GREECE'S OUTLOOK TO Positive From Stable, Affirms Baa3 Ratings Moody's On Greece: Outlook Change To Positive Reflects Upside Risks To Greece's Credit Profile Moody's: Affirmation Of Greece's Baa3 Ratings Reflects Country's Solid Reform Track Record, Structurally Favourable Debt Affordability Metrics Moody's On Greece: Greek Debt Levels Will Still Be Among Highest In Our Rated Universe Through End Of This Decade (Reuters.Briefs@thomsonreuters.com;)