Meiselman v. Crown Heights Hospital

In Meiselman v. Crown Heights Hospital (285 N.Y. 389 [1941]), the Court of Appeals stated that: "Ordinarily, expert medical opinion evidence, based on suitable hypotheses, is required, when the subject-matter to be inquired about is presumed not to be within common knowledge and experience and when legal inference predominates over statement of fact, to furnish the basis for a determination by a jury of unskillful practice and medical treatment by physicians; but where the matters are within the experience and observation of the ordinary jurymen from which they may draw their own conclusions and the facts are of such a nature as to require no special knowledge or skill, the opinion of experts is unnecessary."