congestion

Nurses often snap on needles before injection, do you know why?
Different from most other majors, medical students have a minimum of 6 years of study time.
10 common causes of hypotension
Low blood pressure, also known as low blood pressure, is a phenomenon when a person's blood pressure is low, below 90mmHg. Currently, low blood pressure is a very common
Motorcycles flying in the United States
An American inventor designed a tricycle capable of flying up and down like a helicopter.