1. Union Pacific Railroad Co. v Botsford, 141 U. S. 250 (1891).
2. Slater v Baker and Stapleton, 95 Eng. Rep. 860 (K.B. 1767).
3. Schloendorff v Society of New York Hospital, 105 N.E. 93 (N.Y. 1914).
4. Salgo v Leland Stanford University Board of Trustees, 317 P. 2d 170 (Cal. App. 1957).
5. Canterbury v Spence, 464 F 2d 772 (D. C. Cir. 1972), cert den. 409 U.S. 1064 (1972).