Pink Sheet's Stocks to Watch - Gazprom OAO (ADR) (PINK:OGZPY), Ambac Financial Group, Inc. (PINK:ABKFQ), GLOBAL HEALTH VOY in (PINK:GLHV), PPR SA UNSP ADR (PINK:PPRUY)

Birmingham, West Midlands -- (SBWIRE) -- 04/19/2013 -- Value Penny Stocks issues special report on Gazprom OAO (ADR) (PINK:OGZPY), Ambac Financial Group, Inc. (PINK:ABKFQ), GLOBAL HEALTH VOY IN (PINK:GLHV), PPR SA UNSP ADR (PINK:PPRUY)