The Productivity of Physician Specialization: Evidence from the Medicare Program
利用美国医疗保险计划数据，分析医生专业化对医疗服务生产力的影响，为卫生经济学和医疗政策研究提供实证证据。
The Productivity of Physician Specialization: Evidence from the Medicare Program by Katherine Baicker and Amitabh Chandra. Published in volume 94, issue 2, pages 357-361 of American Economic Review, May 2004