(Q41665935)
Statements
1 reference
The effect of comorbidity on care seeking for back problems in the United States (English)
1 reference
Hurwitz EL
1 reference
Morgenstern H
1 reference
1 May 1999
1 reference
1 reference
9
1 reference
4
1 reference
262-270
1 reference
Identifiers
1 reference
1 reference