Cagli V.
Prof Inferm. 1973 Nov-Dec;26(6):161-3.
PMID: 4494136

Yan D.
Zhonghua Liu Xing Bing Xue Za Zhi. 1992 Dec;13(6):348-50.
PMID: 1303315

Green LW, Levine DM, Deeds S.
Prev Med. 1975 Dec;4(4):417-25. doi: 10.1016/0091-7435(75)90030-4.
PMID: 813195

[No authors listed]
J Fam Pract. 1977 Jan;4(1):38.
PMID: 833559

Crespo Peinado R.
Rev Enferm. 1996 Dec;19(220):14-7.
PMID: 9070777

Iglesias Bonilla P, Lapetra Peralta J.
Aten Primaria. 2002 Feb 28;29(3):197; author reply 197-8. doi: 10.1016/s0212-6567(02)70538-6.
PMID: 11879612

Galli MA.
Home Healthc Nurse. 1984 Mar-Apr;2(2):43-5. doi: 10.1097/00004045-198402020-00008.
PMID: 6562120