1Turnbull DA, Wilkinson C, Gerard K, et al. Clinical,psychosoeial, and economic effects of antenatal day care for three medical complications of pregnancy, a randomized controlled trial of 395 women [J]. Lancet, 2004,363 (9415): 1104-1109.
2Borghi J, Bastus S, Belizan M, et al. Costs of publicly provided maternity services in Rosario, Argentina [J].Salud Publia Mex, 2003, 45 (1): 27-34.
3Sackett K, Pope RK, Erdlery WS. Demonstrating a positive return on investment for a prenatal program at a managed care organization. An economic analysis[J]. Perinat Neonatal Nurs, 2004, 18 (2): 117-127.
4Fonsecal L, Monga M, Silva J, Postdates pregnancy in an indigent population: the financial burden [J]. Am J Obstet Gynecol, 2003, 188 (5):1214-1216.
5Shaokang Z, Zhenwei S, Blas E. Economic transition and maternal health care for internal migrants in Shanghai, China [J]. Health Policy Plan, 2002, 17 Suppl. 47-55.
6Howell EM, Dubay L, Kenney G, Sommers AS. The impact of Medicaid managed care on pregnant women in Ohio: a cohort analysis [J]. Health Serv Pes, 2004,39 (4 Pt 1): 825-846.
7Chen CS, Liu TC, Chen LM. National Health Insurance and the antenatal care use: a case in Taiwan [J].Health Policy, 2003, 64 (1): 99-112.
8Fullerton JT, Nelson C, Shannon R, Bader J. Prenatal care in the Paso del Norte border region [J]. Perinatol,2004, 24 (2): 62-71.
9Guillory VJ, Samuels ME, Probst JC, Sharp G.. Prenatal care and infant birth outcomes among Medicaid recipients [J]. Health Care Poor Underserved, 2003, 14(2); 272-289.
10Jan S, Conaty, Hecker R, et al. An holistic economic evaluation of an Aboriginal community-controlled midwifery programme in Western Sydney [J]. Health Serv Res Policy, 2004, 9 (1): 14-21.
