Whitaker argues that "mad doctors" needed a better professional image. To justify psychiatry as a bona fide part of scientific medicine, they had to deliver cost-effective, scientific medical treatments. They tried animal hormone injections, arsenic injection, tonsillectomy, dental extractions, hysterectomy, oophorectomy, clitoridectomy, insulin coma therapy, metrazole convulsive therapy, electroshock treatment, and prefrontal lobotomy.