The Person who reported information on the Patient's behalf. This may be the Patient him/herself, a spouse or relative, or another clinician. Note that because all we need is the Person's name and contact information (name, address, phone numbers), this class does not have an association to the Person class (although logically it should). This is because the other properties of Person, such as sex and date of birth, are irrelevant to the usage. The HL7 Role class allows for names and addresses on the Role, which technically should be only those names or addresses as the relate to the role (i.e., as they differ from those in Person class), but since these are available for use, we are utilizing them in this manner.