Gaya APA
Patterns of opioid use for chronic noncancer pain in the veterans Health administration from 2009 t0 2011. (2014).
Washington:
IASP.
Gaya MLA
Patterns of opioid use for chronic noncancer pain in the veterans Health administration from 2009 t0 2011.
.
Washington:
IASP,
2014.
Artikel.