Comment to: “Efficacy and Safety of Hyaluronic Acid Combined with Botulinum Toxin Type A in the Treatment of Midcheek Groove: A Prospective Study”
摘要
Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.