“This case presents the following issue: Does the Sexually Violent Predator Act (Welf. & Inst. Code, § 6600 et seq.) allow the People to retain a private expert to testify at trial as to whether a defendant is a sexually violent predator, or are the expert witnesses limited to those designated by the State Department of State Hospitals (Welf. & Inst. Code, §§ 6601 & 6603)?”

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