Merck & Co., Inc. (Jobs) and Schering-Plough Corporation (Jobs) Cholesterol Trial Faces Probe

LOS ANGELES, Dec 11 (Reuters) - Schering-Plough SGP.N and Merck & Co MRK.N are being investigated by U.S. lawmakers on allegations that the drugmakers are withholding data from a study that may change how doctors treat high cholesterol.
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