backgroundDefined in the health-lifesci.schema.org extension.
Canonical URL: http://schema.org/background
Descriptive information establishing a historical perspective on the supplement. May include the rationale for the name, the population where the supplement first came to prominence, etc.
Usage: Between 10 and 100 domains
|Values expected to be one of these types|
|Used on these types|
Schema Version 3.4