The Justice Department's approval of the $69 billion merger between CVS Health and Aetna on Wednesday caps a wave of consolidation among giant health care players that could leave American consumers with less control over their medical care and prescription drugs. The approval marks the close of an era, during which powerful pharmacy benefit managers brokered drug prices among pharmaceutical companies, insurers, and employers. But a combined CVS-Aetna may be even more formidable. (Reed Abelson, New York Times)
