Kikuchi K.
Kango. 1979 Nov;31(11):40-3.
PMID: 261174

Leino-Kilpi H.
Hoitotiede. 1991;3(5):200-7.
PMID: 1790019

Walker LO.
Nurs Outlook. 1968 Sep;16(9):39.
PMID: 5186872

Griffith M.
Nev Rnformation. 1987 Dec;1-2, 7.
PMID: 3696305

Kadir L.
Turk Hemsire Derg. 1986;36(1):23-5.
PMID: 3649099

Griffin LS.
Okla Nurse. 1978 Nov;23(10):11.
PMID: 251914

Boylan A.
Nurs Times. 1982 Sep 8-14;78(36):1523-4.
PMID: 6923245