Title
fhir:HumanName.prefix
FamilyName
fhir:HumanName.family
GivenNames
fhir:HumanName.given
Alias
may be a shortened or familiar form of the GivenName (e.g., Betty or Lizzie vs Elizabeth), by which the person is generally known by family & friends;
BirthDate
At least an estimated year should be provided as a guess if the real DOB is unknown.
fhir:Person.birthDate
Gender
fhir:Person.gender
Identifier
References by which people are known in various schemes. e.g. NiNo, Health Number, a local reference.