Changes in version 0.1.5 (2022-10-16)                  

  - Change the condition of adjusting for sTfR. sTfR is adjusted by AGP
    only in WRA and PSC population groups. sTfR can be adjusted by AGP
    or CRP in other/manual population groups.
  - 10/16/2022：moved URL: https://brinda-nutrition.org/publications/ to
    https://www.brinda-nutrition.org/publications)

                 Changes in version 0.1.4 (2022-04-12)                  

  - To adjust for inflammation in Zinc, correlation should < -0.1
    instead of -0.2
  - For zinc: applying adjustment for AGP when only AGP is available
    (instead of adjustment for AGP and CRP)
  - Add more examples to the readme

                 Changes in version 0.1.3 (2021-11-10)                  

  - Reduce the title to 65 characters
  - Add more description and DOI

                        Changes in version 0.1.2                        

  - Add more description
  - Use "message()" to print notifications instead of "print()".
  - Organize the notifications to make it flow better.
  - Change all(is.na(agp)) or all(is.na(crp)) to exists("agp", dataset),
    or exists("crp", dataset)

                        Changes in version 0.1.1                        

  - Resolve the problems of global variables;
  - Change "=" to "<-" in some lines

                        Changes in version 0.1.0