(Q39249581)
Statements
1 reference
Obstructive lung disease in northern Sweden: respiratory symptoms assessed in a postal survey (English)
L Nyström
1 reference
B. Lundbäck
L. Rosenhall
1 March 1991
1 reference
1 reference
4
1 reference
3
1 reference
257-266
1 reference
Identifiers
1 reference