Reference-class: A reference holding reference values (LMS) for measurements.
In CrescNet/GrowthSDS: Utility Functions for Growth SDS Calculations

A reference holding reference values (LMS) for measurements.

title: reference title
yearPublished: year when reference was first published
description: description of the reference
doi: DOI
ethnicGroup: ethnic group, this reference should be used for
disorder: disorder, this reference should be used for
values: actual LMS reference values of the reference

Reference(
  title       = 'My reference',
  ethnicGroup = list(
    name  = 'Germans',
    sctid = '7695005' # concept ID in SNOMED CT
  ),
  disorder = list(
    name = 'Turner syndrome',
    scid = '38804009'
  ),
  values = list(
    height = list(
      male = data.frame(x = c(), l = c(), m = c(), s = c())
    )
  )
)