Friday's WSJ has a (sub-only) article "chronicling one doctor's rise and fall as an expert witness for plaintiffs against his fellow obstetrictians", as our sister site Medical Progress Today puts it:

[Dr. Barry Schifrin] has testified against other doctors hundreds of times in the past three decades. In 2004, the American College of Obstetricians and Gynecologists censured Dr. Schifrin, for testimony he gave in a malpractice case. He later resigned from the organization.

In particular, Dr. Schifrin is a champion of the use of electronic fetal monitoring (EFM), which he helped develop, and he believes that the device produces good information, which doctors and nurses negligently misinterpret.

The WSJ article is somewhat inconclusive in tone, but readers who would like a more thoroughgoing critique of EFM will find that Manhattan Institute fellow Peter Huber devotes much of a chapter to the subject in his landmark book on science in the courts, Galileo's Revenge (buy). More here and (scroll) here.