Scott SD, Lower MS.
Mo Nurse. 1988 Nov-Dec;57(6):18-9.
PMID: 3211121

Kelly LS.
Nurs Outlook. 1991 May-Jun;39(3):101.
PMID: 2027789

Saunders V.
Hawaii Nurse. 1989 May;30(4):3.
PMID: 2730760

Rao GA.
Nurs J India. 1981 Jun;72(6):183-5.
PMID: 6916278

Lundqvist M.
Sygeplejersken. 1987 Mar 11;87(11):10-5.
PMID: 3649012

Hatano K.
Kango Kyoiku. 1984 Jan;25(1):50-1.
PMID: 6563169

Hull M.
Nursing. 1993 May;23(5):116, 118.
PMID: 8487988