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https://www.medicalnewstoday.com/articles/313968
Diakses 2 September 2020Medical News Today. https://www.medicalnewstoday.com/articles/313968
Diakses 2 September 2020Parent Tune. https://www.parentune.com/parent-blog/swelling-behind-your-infants-ear/3707
Diakses 2 September 2020