AUTHOR=Huang Lingfei , Wang Junyan , Yang Jufei , Zhang Huifen , Hu Yan , Miao Jing , Mao Jianhua , Fang Luo TITLE=Corrigendum: Impact of sampling time variability on tacrolimus dosage regimen in pediatric primary nephrotic syndrome: Single-center, prospective, observational study JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.1051794 DOI=10.3389/fphar.2022.1051794 ISSN=1663-9812