AUTHOR=Liu Hui , Yu Hongling , Li Ting , Yu Yerong TITLE=Commentary: Reduction in C-Peptide Levels and Influence on Pharmacokinetics and Pharmacodynamics of Insulin Preparations: How to Conduct a High-Quality Euglycemic Clamp Study JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.843658 DOI=10.3389/fphar.2022.843658 ISSN=1663-9812