heard normally

Ulcerative Colitis: What causes the disease?
Ulcerative colitis is a chronic illness of the gastrointestinal tract, which inflames the mucous membrane of the colon. The full name of the disease is nonspecific ulcerative colitis (NNC). This…

...

That everyone should know about HIV infection: how to avoid infection
Each year the world community marks the World AIDS Day on December 1. AIDS (Acquired Immunodeficiency Syndrome) is the last stage of HIV - a human immunodeficiency virus that ends…

...