Name	Info	Provider	Link
Full text from AIR - Univ. Milan	free resource	Archivio Istituzionale della Ricerca Unimi	https://air.unimi.it/handle/2434/791074
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23075060/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23075060
	free resource	Silverchair Information Systems	https://meridian.allenpress.com/angle-orthodontist/article-lookup/doi/10.2319/050812-378.1