Zellmer WA.
Am J Hosp Pharm. 1976 Oct;33(10):1003.
PMID: 973627

Bosanquet N.
Nurs Times. 1975 Jun 12;71(24):913.
PMID: 1134974

Furniss J, Zammit-Lucia J, Johnson N.
BMJ. 1998 Jan 17;316(7126):226; author reply 228.
PMID: 9468699

Blake EM.
Am Pharm. 1980 Sep;(9):52-3. doi: 10.1016/s0160-3450(16)31092-3.
PMID: 7424794

Marshall K.
Am Pharm. 1981 Apr;(4):41-3. doi: 10.1016/s0160-3450(16)31302-2.
PMID: 7223628

Smith JL, Cervero RM, Valentine T.
J Contin Educ Health Prof. 2006;26(4):302-12. doi: 10.1002/chp.83.
PMID: 17163494

The Lancet Oncology.
Lancet Oncol. 2014 Jun;15(7):667. doi: 10.1016/S1470-2045(14)70252-9.
PMID: 24872093