Normative Data for the 12 Item WHO Disability Assessment Schedule 2.0 Andrews, Gavin ; Kemp, Alice ; Sunderland, Matthew ; Von Korff, Michael ; Ustun, Tevik Bedirhan Abstract Publication: PLoS ONE Pub Date: December 2009 DOI: 10.1371/journal.pone.0008343 Bibcode: 2009PLoSO...4.8343A