Hospital systems that are part of the VHA, Inc., a hospital-owned cooperative, strongly disagree with claims made by a recent Medical Device Manufacturers Association report on group purchasing organizations, according to a VHA press release. In a letter sent to the chair of the MDMA, the 14 VHA members said the device lobby's contention that healthcare GPOs drive healthcare costs up was "unbelievable." Without GPOs, smaller hospitals "would lose access to the critical help their GPOs provide in monitoring and controlling supply costs," the letter said. Press release