Scientific Reports 6: Article number: 25727; published online: 12 May 2016; updated: 23 January 2017

The authors neglected to cite a previously-published related paper which reports the use of PEDOT:PSS ink-jet printing to realize nanosheets for skin-contact applications. This is listed below as reference 1, and should appear in the introduction as below:

“Thin film based devices19,20, and organic electrochemical transistors21 were also recently proposed for surface sensing applications”.

should read:

“Thin film based devices19,20, organic electrochemical transistors21 and PEDOT:PSS ink-jet printed nanosheets1, were also recently proposed for surface sensing applications. In the latter example1, PEDOT:PSS electrodes printed onto temporary tattoos were used for EMG recordings”.