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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

A breech birth. This image illustrates a newborn that has been delivered buttocks first. A breech birth. This image illustrates a newborn that has been delivered buttocks first.
This graphic illustrates the original systems model of politics advanced by David Easton. Politics This graphic illustrates the original systems model of politics advanced by David Easton. Politics
The power and control wheel illustrates the strategies that one partner may use to intimidate, ... The power and control wheel illustrates the strategies that one partner may use to intimidate, ...
An angiogram that illustrates narrowing of the carotid artery (see arrow), the main pathway of blood ... An angiogram that illustrates narrowing of the carotid artery (see arrow), the main pathway of blood ...
This graph illustrates how unattached older adults are poorer than their peers who live in families This graph illustrates how unattached older adults are poorer than their peers who live in families
Calico cat illustrates the Lyon hypothesis Calico cat illustrates the Lyon hypothesis
Video: Electromagnetic Spectrum, Chlorophyll and Pigment & Light

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