RT Journal Article SR Electronic T1 Letters to the Editor JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 435 OP 436 VO 54 IS 6 A1 James E. Akers YR 2000 UL http://journal.pda.org/content/54/6/435.abstract AB