Women who gave birth between these hours were 86% more likely to be given drugs and were 43% more likely to have an instrumentally-assisted delivery.

BBC: Daytime births 'more difficult'

Kevorkian was originally charged with murder, assisted suicide, and delivery of a controlled substance, but prosecutors dropped the assisted suicide charge to prevent the defense from presenting evidence about Youk's pain and suffering.

CNN: Kevorkian Case: Video of killing shown to jury