Marletta, Giuseppe, Giovanna Artioli, Leopoldo Sarli, and Tiziana Mancini. 2015. “The Hypothesis of Contact in Nursing: A Narrative Review of the Literature”. Acta Biomedica Atenei Parmensis 86 (1Suppl): 62-68. https://mattioli1885journals.com/index.php/actabiomedica/article/view/4304.