Physical activity guidelines from around the world are typically expressed in terms of
frequency, duration, and intensity parameters. Objective monitoring using pedometers and …

Drug interactions occur when the efficacy or toxicity of a medication is changed by administration
of another substance. Pharmacokinetic interactions often occur as a result of a change …

Objective: To assess the efficacy of carotid endarterectomy for stroke prevention in
asymptomatic and symptomatic patients with internal carotid artery stenosis. Additional clinical …

Background Depression and anxiety are common, disabling and chronic. Self-guided
internet-delivered treatments are popular, but few people complete them. New strategies are …

There is pressing urgency to understand the pathogenesis of the severe acute respiratory
syndrome coronavirus clade 2 (SARS-CoV-2), which causes the disease COVID-19. SARS-…

Background Previous studies have shown that carotid endarterectomy in patients with
symptomatic severe carotid stenosis (defined as stenosis of 70 to 99 percent of the luminal …

… Spence, principal investigator, and by National Aeronautics and Space Administration
Grant NGR 44012-224, Robert Helmreich, principal investigator. Joy Stapp is now at the …

Jonathan D. Spence is George Burton Adams Professor of History at Yale University and
author of eight acclaimed books on China. Here he has written a very readable history of this …

Clinician-guided Internet-based cognitive behavioural therapy (iCBT) programs are clinically
effective at treating specific anxiety disorders. The present study examined the efficacy of a …

X-ray crystallography provides the vast majority of macromolecular structures, but the success
of the method relies on growing crystals of sufficient size. In conventional measurements, …