%0 Journal Article %T Low Molecular Weight Opioid Peptide Esters Could be Developed as a New Class of Analgesics %A Joel S. Goldberg %J Perspectives in Medicinal Chemistry %D 2011 %I %U http://www.la-press.com/low-molecular-weight-opioid-peptide-esters-could-be-developed-as-a-new-a2777