GERD is often diagnosed simply by finding no improvement in heartburn symptoms in response to lifestyle changes and acid reflux medication. Gastroenterologists may also arrange the following investigations:
Trading blocs. A regional trading bloc is a group of countries within a geographical region that protect themselves from imports from non-members. Trading blocs are a form of economic integration, and increasingly shape the pattern of world trade. There are several types of trading bloc:
Packing means combining as many like-minded voters into one district as possible to prevent them from affecting elections in other districts. Stacking occurs when low-income, less educated minorities are grouped together to create a perceived voting majority but are placed in the same district as high-income, more-educated white voters who turn out in greater numbers.