TY - BOOK AU - Enthoven Alain C. AU - Tollen Laura A. TI - Toward a 21st century health system: The contributions and promise of prepaid group practice SN - 0787973092 U1 - 362.1 042 PY - 2004/// CY - USA. PB - John Wiley & Sons, Inc. KW - health policy KW - United states KW - quality of health care ER -