A follow-up of workers at beryllium processing plants showed significant associations with lung cancer, cancers of the nervous system, urinary tract cancers and chronic obstructive pulmonary disease. Most diseases of interest showed a dose-response relationship and peak dose relationship. See: "Cohort Mortality Study of Workers at Seven Beryllium Processing Plants: Update and Associations With Cumulative and Maximum Exposure".
Now I must explain the Subtle Approach. There are three occasions on which we cannot use the Direct Opening, and these we must consider carefully: (1) when our cause is discreditable, that is, when the subject itself alienates the hearer from us; (2) when the hearer has apparently been won over by the previous speakers of the opposition; (3) or when the hearer has become wearied by listening to the previous speakers.
- Cicero "Ad Herennium"
Add this blog to your feeds or put your e-mail in the box below and hit GO to subscribe by e-mail.
Enter keywords: