AUTHOR=Otvos Laszlo , Wade John D. TITLE=Current challenges in peptide-based drug discovery JOURNAL=Frontiers in Chemistry VOLUME=2 YEAR=2014 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2014.00062 DOI=10.3389/fchem.2014.00062 ISSN=2296-2646