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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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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

One proposed timeline of the origin of space, from physical cosmology. One proposed timeline of the origin of space, from physical cosmology.
Inspecting a patient’s ear during a physical examination. Inspecting a patient’s ear during a physical examination.
Homeless people sleeping on the streets is a common sight in India’s cities. I took this photo in ... Homeless people sleeping on the streets is a common sight in India’s cities. I took this photo in ...
Upward social mobility, though welcome, can place people in a world so different from their world of ... Upward social mobility, though welcome, can place people in a world so different from their world of ...
Physical Fitness Profile Form. Physical Fitness Profile Form.
The Benefits of Physical Fitness (1 of 2) The Benefits of Physical Fitness (1 of 2)
Video: Cardiac Cycle (Part 1 of 4)

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