The basic PEST analysis includes four factors: 1  Political factors are basically to what degree the government intervenes in the economy. 2  Specifically, political factors has areas including tax policy, labor law, environmental law, trade restrictions, tariffs, and political stability.
Gallstones are small, hard deposits that form in the gallbladder, a sac-like organ that lies under the liver in the upper right side of the abdomen. They are common in the wealthy countries, affecting 10-15% of adults. Most people with gallstones don't even know they have them.
Gallstones are hard deposits that form inside the gallbladder. Gallstones may be as small as a grain of sand or as large as a golf ball. The cause of gallstones varies. There are two main types of gallstones: 1  Stones made of cholesterol. This is the most common type. Cholesterol gallstones are not related to cholesterol levels in the blood.  Stones made of bilirubin. These are called pigment stones. They occur when red blood cells are destroyed and too much bilirubin is in the bile.