Ask unlimited questions for free
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Medication errors are more common among seriously ill patients than with those with minor conditions.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
There are approximately 3 million unintended pregnancies in the United States each year.
Vaccines prevent between 2.5 and 4 million deaths every year.
For a complete list of videos, visit our video library