More Groups
Fewer Groups
More People
Fewer People
More Years
Fewer Years
More Publications
Fewer Publications
More Publishers
Fewer Publishers
Dworkin, R. H.; Portenoy, R. K. Pain (1996)
Dworkin, R. H.; Portenoy, R. K. Lancet (1994)
Galer, B. S.; Portenoy, R. K. Mount Sinai Journal of Medicine (1991)
Portenoy, R. K.; Duma, C.; Foley, K. M. Annals of Neurology (1986)