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Diakses pada 7 Desember 2020Mayo Clinic. https://www.mayoclinic.org/healthy-lifestyle/weight-loss/in-depth/weight-loss/art-20047752
Diakses pada 7 Desember 2020Medical News Today. https://www.medicalnewstoday.com/articles/320793
Diakses pada 7 Desember 2020