What is the test for assessing contradictory evidence in a medical malpractice case?

We assess these findings under the substantial evidence standard, by which our review begins and ends with a determination as to whether there is any substantial evidence, contradicted or uncontradicted, to support the findings. The "'test is not the presence or absence of a substantial conflict in the evidence. Rather, it is simply whether there is substantial evidence in favor of the respondent. If this "substantial" evidence is present, no matter how slight it may appear in comparison with the contradictory evidence, the judgment must be upheld. As a general rule, therefore, we will look only at the evidence and reasonable inferences supporting the successful party, and disregard the contrary showing.' [Citation.]" (Morgan v. Imperial Irrigation Dist. (2014) 223 Cal.App.4th 892, 917.)