Author contributions
X.L. and X.M. conceived and designed the study; B.X. worked as the assistant of the music therapist and Q.L. accompanied and monitored the participants with staff. Q.L. and BX collected and analyzed the data; B.X. wrote the manuscript draft, X.M. is a statistician on the author team, and X.L. and X.M. critically revised the manuscript. All authors contributed substantially to this work.