extension shown: health [x]

referredBy

Defined in the health.schema.org extension. (This is an initial exploratory release.)
Canonical URL: http://schema.org/referredBy

Thing > Property > referredBy

Specifying a referrer for a patient in general, but can be applied to other medical entities

Usage: Fewer than 10 domains
[more...]
Values expected to be one of these types
HealthFacility
Person
Used on these types
Patient

Schema Version 2.1