Is there any case law where an opposing party has standing to oppose the exchange of expert witness information?

Can a party demand the exchange of expert witness information by all parties? (California, United States of America)

Does a witness who disowns his out-of-court identification have an opportunity to question the witness on the witness stand? (California, United States of America)

Is there any case law where an expert has been charged with misconduct while engaged as an expert witness? (California, United States of America)

What is the test for imposing a sanction including an order requiring an attorney for one party to pay attorney fees for an opposing party? (California, United States of America)

In a personal injury action, does plaintiff have to disclose in his witness exchange list or, in response to a request at a deposition, the substance of the facts and opinions to which the witness will testify at trial? (California, United States of America)

Does the jury have been instructed to consider the evidence of a convicted criminal gang in the context of the facts and information relied on by an expert witness? (California, United States of America)

Can a witness be admitted as a witness at a preliminary hearing where the witness is in a state hospital? (California, United States of America)

Is an expert's need to consider extrajudicial matters, and a jury's need for information sufficient to evaluate an expert opinion? (California, United States of America)

If an informant's information is sufficient to establish probable cause for arrest, is that information sufficient to warrant arrest? (California, United States of America)

Can counsel consult with a medical expert and determine no favorable testimony would result if the expert was called as a witness? (California, United States of America)