1. Prepaid health care in the United States;Burstein;Ill Med J,1981
2. What goes around comes around;Rowland;Am J Obstet Gynecol,1998
3. Railway surgery: traumatology and managed health care in the 19th century United States;Rut Kow;Arch Surg,1993
4. Market driven health care;Hertzlinger,1997
5. Five trends to watch;Reece;Physician Practice Options,1998