Section 51(2)(b): amended, on 1 January 2001, by section 111(1) of the New Zealand Public Health and Disability Act 2000 (2000 No 91).
Section 51(2)(b): amended, on 1 April 1958, pursuant to section 158(1) of the Hospitals Act 1957 (1957 No 40).
Section 51(2)(d): amended, on 1 March 2002, by section 170(1) of the Public Trust Act 2001 (2001 No 100).