Retrospection and prospection
Tài liệu tham khảo
Smellie, 1971
Bonica, 1967, Historical notes, 2
Lyons, 1987, Infection, 548
McDonough, 1988, 1938-1988, Evolution of an idea: The next 50 years, Am J Obstet Gynecol, 159, 696, 10.1016/S0002-9378(88)80037-1
Relman, 1989, Universal health insurance: its time has come, N Engl J Med, 320, 117, 10.1056/NEJM198901123200208