Demographia World Urban Areas and Population Projections accounts for more than 50% of world urbanization and includes all identified urban areas with 500,000 population or more. These urban areas cover only 0.3% of the world's land area. There is only the most limited data for smaller urban areas.he GRUMP overestimation is illustrated by the following. GRUMP places the total of all urban extents in the United States at 754,000 square kilometers, more than three times the 240,000 square kilometers reported by the Bureau of the Census in 2000.
Factor VII deficiency is a rare genetic bleeding disorder characterized by a deficiency or reduced activity of clotting factor VII. Clotting factors are specialized proteins that are essential for the blood to clot normally.
There are thirteen clotting factors and they all work in sequence to help form a clot. The type of clotting factor that is missing determines what kind of hemophilia you have. The two most common types arehemophilia Aand hemophilia B. In hemophilia A, the missing clotting factor is factor VIII. Hemophilia Ais sometimesreferred to as classical hemophilia. In hemophilia B, the missing clotting factor is factor IX. Hemophilia B is sometimesreferred to as Christmas disease.