Petro AB.
J Miss State Med Assoc. 1974 Apr;15(4):131-3.
PMID: 4820100

Given B, Simmons S.
Kangogaku Zasshi. 1971 May;35(5):86-90.
PMID: 4997410

Goetting MG, Hemachandra H.
Crit Care Med. 1991 Mar;19(3):446-7.
PMID: 1999114

[No authors listed]
Am J Nurs. 1993 Jul;93(7):49. doi: 10.1097/00000446-199307000-00028.
PMID: 8322863

Balanzo J.
Rev Clin Esp. 1977 Aug 15-31;146(3):99-101.
PMID: 918327

[No authors listed]
Br Med J. 1968 Jan 27;1(5586):197-8.
PMID: 5634790 Free PMC Article
Free PMC Article

Wolfman EF.
Calif Med. 1972 Jan;116(1):62-3.
PMID: 5008512 Free PMC Article
Free PMC Article