He did a residency in anesthesia and pain medicine again, became a founder of the multidisciplinary pain clinic at Massachusetts General Hospital and a director of the American Pain Society.

• 他又进行了麻醉和疼痛药品的高级住院实习，随后成为马萨诸塞综合医院多科疼痛门诊的创始人和美国疼痛协会会长。