Notice of Retraction: Pak CS, et al. A Phase III, Randomized, Double-Blind, Matched-Pairs, Active-Controlled Clinical Trial and Preclinical Animal Study to Compare the Durability, Efficacy and Safety between Polynucleotide Filler and Hyaluronic Acid Filler in the Correction of Crow's Feet: A New Concept of Regenerative Filler. J Korean Med Sci 2014; 29(Suppl 3): S201-S209 - Retraction Notice | RetractBase