PT - JOURNAL ARTICLE AU - Letters TI - LETTERS TO THE EDITOR DP - 1996 Jul 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 198--200 VI - 50 IP - 4 4099 - http://journal.pda.org/content/50/4/198.short 4100 - http://journal.pda.org/content/50/4/198.full SO - PDA J Pharm Sci Technol1996 Jul 01; 50