title: ERRATUM.
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Anna
authors.initials: A
authors.lastname: Marconi
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Gaia
authors.initials: G
authors.lastname: Gragnano
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Christian
authors.initials: C
authors.lastname: Lunetta
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Ramona
authors.initials: R
authors.lastname: Gatto
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Viviana
authors.initials: V
authors.lastname: Fabiani
authors.affiliation: c Niguarda Ca' Granda Hospital , Milan , Italy.
authors.forename: Aurora
authors.initials: A
authors.lastname: Tagliaferri
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Gabriella
authors.initials: G
authors.lastname: Rossi
authors.affiliation: a NEuroMuscularOmnicentre (NEMO), FondazioneSerena Onlus, OspedaleNiguarda Cà Granda , Milan , Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Sansone
authors.affiliation: b Department of Psychology , Catholic University of Milan , Milan , Italy cNiguarda Ca' Granda Hospital, Milan, Italy.|c Niguarda Ca' Granda Hospital , Milan , Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Pagnini