Erratum

After publication of the original article [1], it was noticed that authors’ affiliations were incorrectly specified. Affiliation 1 was incorrectly given as Purdue University, whereas the review was carried out at the University of Toronto.

The updated and correct author affiliations of the original article [1] are presented in this erratum. As a result, the ‘Authors’ information’ and Authors details’ sections also should have originally appeared as presented here.