Correction to: Scientific Reports https://doi.org/10.1038/s41598-021-01216-3, published online 08 November 2021.


The original version of this Article contained errors.


The spelling of the author Yong-Jin Kwon was incorrectly given as Yong Jin Kwon.


In the Materials and Methods section, under the subheading ‘Synthesis of PEG-insulin’,


“To introduce diol groups to insulin, 8.0 mg insulin and 1.0 mg PEG were dissolved in 10 ml DMSO to which 0.1–0.2% sodium cyanoborohydride catalyst was added and stirred for 1 h. then stabilized at room temperature for 1 h.”


now reads:


“To introduce diol groups to insulin, 8.0 mg insulin and 1.0 g PEG were dissolved in 10 ml DMSO to which 0.1–0.2% sodium cyanoborohydride catalyst was added and stirred for 1 h. then stabilized at room temperature for 1 h.”


The original Article and accompanying Supplementary Information file have been corrected.