At its conference in November, the NPD rejected a motion calling for the party to distance itself from the skinhead movement.
At least five different forms of Niemann-Pick disease (NPD) have been identified.
In patients with types A and B NPD, there is a build-up of sphingomyelin in cells of the brain, liver, spleen, kidney, and lung.
Patients with type A NPD usually die within the first 18 months of life.
Prenatal diagnosis of types A and B NPD can be done with amniocentesis or chorionic villi sampling.
The data uses calculations based on NPD Group, which provides market research and analysis of retailers who sell video games.
Type A is the most common form of NPD and the most serious, with death usually occurring by the age of 18 months.
Types C and D NPD are related to cholesterol transfer out of cells.
With types C and D NPD, there is significant nervous system damage leading to severe muscle spasms, seizures, and eventually coma and death.