Validation of the self-administered version of the international restless legs syndrome study group severity rating scale - the sIRLS.

D. Sharon, R. Allen, P. Martinez-Martin, A. Walters, L. Ferini Strambi, B. Hogl, L.M. Trotti, M. Buchfuhrer, J. Swieca, R. Bogan, R. Zak, J. Hensley, L. Schaefer, S. Marelli, M. Zucconi, A. Stefani, E. Holzknecht, V. Olvera, H. Meaklim, I. Laska, P. Becker, I. Restless Legs Syndrome Study Group