The Public Health Agency of Canada is part of the federal health portfolio. Our activities focus on protecting against threats to public health, preventing and reducing diseases and injury, and ...

Their structures were elucidated by hydrolysis and spectroscopic methods. Full text available only in PDF format. Texto completo disponível apenas em PDF.

Background People presenting to the ED with acute severe headache often undergo investigation to exclude subarachnoid haemorrhage (SAH). International guidelines propose that brain imaging within 6 ...

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned co-primary or ...