The attorneys for Mid-Columbia Medical Center set out Tuesday to show how the sexual abuse complaints of surgery patients could reasonably be interpreted by medical personnel as drug-induced hallucinations.

Andrew Efaw, one of three attorneys on the hospital’s legal team, put Dr. John Butterworth IV on the stand Oct. 15 to testify about the side-effects of anesthesia. The research of the physician has been published in numerous peer reviewed journals — where subject matter has to be approved by others in the field — during a long career.