منابع مشابه
There Is No Safe Dose of Prions
Understanding the circumstances under which exposure to transmissible spongiform encephalopathies (TSEs) leads to infection is important for managing risks to public health. Based upon ideas in toxicology and radiology, it is plausible that exposure to harmful agents, including TSEs, is completely safe if the dose is low enough. However, the existence of a threshold, below which infection proba...
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353 caesarean sections (incidence 25%). We do not think that the apparently high rate of surgical interference bears any relation to the use of intrathecal morphine, but it is too early yet to be sure. Our next eight patients (not reported here) all delivered spontaneously, thus reducing the incidence of both forceps delivery and caesarean section to 15 ". In 1979 the incidence of forceps deliv...
متن کاملChloroquine retinopathy: is there a safe daily dose?
Published case reports of chloroquine retinopathy rarely include details of daily dosage, but 30 reports where this information was available included 78 patients who developed impaired visual acuity an 13 had received daily doses of 250 mg or less. Eleven cases of ocular toxicity attributed to chloroquine were reported to the Committee on Safety of Medicines but only 2 developed impaired visio...
متن کاملThere is no lexicon!
0. Introduction Within generative linguistics, underlying representations have been a sine qua non. Such representations have been thought to encode what is unpredictable or not governed by rules. Within Optimality Theory (henceforth OT), even though the rules are virtually gone, this view continues. The function GEN and EVAL pair an underlying representation with an optimal output. I argue aga...
متن کامل"Not safe" is not enough: smokers have a right to know more than there is no safe tobacco product.
The right to health relevant information derives from the principles of autonomy and self direction and has been recognised in international declarations. Providing accurate health information is part of the basis for obtaining "informed consent" and is a recognised component of business ethics, safety communications, and case and product liability law. Remarkably, anti-tobacco and pro-tobacco ...
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ژورنال
عنوان ژورنال: PLoS ONE
سال: 2011
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0023664