@incollection{a1c_hemoglobin_a1c_2026,
  author = {Clark, Russell},
  title = {A1C (Hemoglobin A1C)},
  booktitle = {CFP Weight Loss Glossary},
  year = {2026},
  url = {https://glossary.cfpweightloss.com/a1c-hemoglobin-a1c}
}