RT Journal Article SR Electronic T1 LETTER TO EDITOR JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 243 OP 243 VO 58 IS 5 A1 Matthews, Brian YR 2004 UL http://journal.pda.org/content/58/5/243.abstract AB