1. Robert J. Amdur, MDa ; Jessica Kirwan, MAb; and Christopher G. Morris, Biostatistics Consultant Department of Radiation Oncology, University College of Medicine, Gainesville, FL. Use of the Passive Voice in Medical Journal Articles. 2018.

2. Sheen AP. Breathing Life into Medical Writing: A Handbook. St. Louis: Mosby; 1982:2122.

3. Taylor RB. The Clinician's Guide to Medical Writing. New York: Springer; 2005:1-40-43.

4. St James D, Sprio H. Writing and Speaking for Excellence: A Guide for Physicians. Boston: Jones and Bartlett Publishers, Inc; 1996:37.

5. Mathews JR, Bowen JM, Matthews RW. Successful Scientific Writing: A Step-by Step Guide for the Biological and Medical Sciences, ed. 2. New York: Cambridge University Press; 2000: 106, 120.

6. American Medical Association. AMA Manual of Style: A Guide for Authors and Editors, ed. 10. New York: Oxford University Press; 2007:320.

7. Albert T. The A-Z of Medical Writing. London: BMJ Books; 2000:137-138.

8. Flesch R. How to Write, Speak, and Think More Effectively. New York: Harper; 1960:142.

9. Albert T. Why are medical journals so badly written? Med Educ. 2004; 38:6-8.