What is the test for determining the credibility of evidence in a medical malpractice case?

whether it contains substantial evidence from which a reasonable finder of fact could make the necessary findings beyond a reasonable doubt. The evidence must be reasonable, credible and of solid value. We presume every inference in support of the judgment that the finder of fact could reasonably have made. We do not reweigh the evidence or reevaluate witness credibility. We cannot reverse the judgment merely because the evidence could be reconciled with a contrary finding. (People v. D'Arcy (2010) 48 Cal.4th 257, 293.)