https://scholar.google.com/scholar_lookup?title=Dental+Erosion+and+Its+Growing+Importance+in+Clinical+Practice:+From+Past+to+Present&author=Johansson,+A.-K.&author=Omar,+R.&author=Carlsson,+G.E.&author=Johansson,+A.&publication_year=2012&journal=Int.+J.+Dent.&volume=2012&pages=632907&doi=10.1155/2012/632907&pmid=22505907