A week earlier, he had performed the same procedure on another patient in Chicago who suffered from an enlarged and overactive thyroid.
An early member and co-founder of the Society for Clinical and Experimental Hypnosis (SCEH), a professional hypnosis society for researchers founded in 1949, Kroger later co-founded the American Society of Clinical Hypnosis with Milton H. Erickson, which included clinicians into their ranks [REF].