His most influential, The Inverse Care Law, published in the Lancet 1971 asserts: "The availability of good medical care tends to vary inversely with the need for the population served. This inverse care law operates more completely where medical care is most exposed to market forces, and less so where such exposure is reduced." Publications Scientific articles Hart JT. "Two paths for medical practice. The Lancet 1992 sept 26; 340 Hart JT. The National Health Service as precursor for future society. 2002 Books Hart JT. The National Health Service: in England and Wales. Communist Party of Great Britain; 1970. Hart JT, Communist Party of Great Britain. The National Health Service in England and Wales: a marxist perspective. London Health Students Branch. Research and Study Group, Marxists in Medicine; 1971. Hypertension: community control of high blood pressure. First edition. 1980. Hart JT. An exchange of letters: hospital referrals. MSD Foundation; 1985. A new kind of doctor: the general practitioner’s part in the health of the community. London: Merlin Press; 1988. Hart JT, Stilwell B, Gray M. Prevention of coronary heart disease and stroke: a workbook for primary care teams. Faber; 1988. Hart JT, Pickering G. Hipertensión: su control en la comunidad. Doyma; 1989. Hypertension: community control of high blood pressure. Third edition. Oxford: Radcliffe Medical Press; 1993. Feasible Socialism: National Health Service past, present and future. London: Socialist Health Association; 1994 Going for Gold: a new approach to primary medical care in the South Wales valleys. Swansea: Socialist Health Association; 1997. Going to the doctor. In: Cooter R, Pickstone J (eds). Medicine in the 20th Century. Amsterdam: Harwood Academic Publishers; 2000. p. 543-58. Hart JT, Savage W, Fahey T. High Blood Pressure at Your Fingertips: The Comprehensive and Medically Accurate Manual on How to Manage Your High Blood Pressure. McGraw-Hill Australia; 2003. What you need to know in nine pages. In: Fahey T, Murphy D, Hart JT. High Blood Pressure. Excerpt from High Blood Pressure at your fingertips. Third edition: London: Class Publishing; 2004. Hart JT. Storming the Citadel: from romantic fiction to effective reality. In: Michael PF, Webster C (eds). Health and Society in Twentieth Century Wales. University of Wales Press; 2006. p. 208-15. The Political Economy of Health Care: A clinical perspective. Bristol: Policy Press; 2006. Hart JT. La economía política de la sanidad. Una perspectiva clínica. Madrid: Ediciones GPS Madrid; 2009. Hart JT. The political economy of health