M.D.N., A.F., G.S., and L.J. designed the study and wrote the protocol. G.G., L.M. (Laura Monti), and M.M. managed the literature searches and analyses. L.M. (Lorenzo Moccia) and D.J. undertook the statistical analysis and wrote the first draft of the manuscript. Data curation, G.G. and B.A.; Investigation, M.M.; Project administration, E.C.; Resources, L.M. (Laura Monti); Supervision, A.F., G.S., M.D.N. and L.J.; Writing—original draft, L.M. (Lorenzo Moccia) and D.J. All authors have read and agreed to the published version of the manuscript.