Equipment wears out and needs to be replaced more often than library resources.

Centenarians avoid age-associated diseases, but you see a lot of systemic wear and tear.

Rest is a vital and essential process that decreases wear and tear on the mind and body.

However, the years that followed were difficult and the spirit of global partnership we felt after 9/11 frayed.

In 10 of the 12 countries studied, current pre-service training is insufficient to maintain the existing density of health workers once all causes of attrition are taken into account.