title: Comment on "Chemical contribution to surface-enhanced Raman scattering".
authors.affiliation: The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
authors.forename: E C
authors.initials: EC
authors.lastname: Le Ru
authors.forename: P G
authors.initials: PG
authors.lastname: Etchegoin