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Diakses pada 3 Agustus 2020Mayo Clinic. https://www.mayoclinic.org/symptoms/headache/basics/when-to-see-doctor/sym-20050800
Diakses pada 3 Agustus 2020Virtual Medical Centre. https://www.myvmc.com/diseases/headache/
Diakses pada 3 Agustus 2020WebMD. https://www.webmd.com/migraines-headaches/migraines-headaches-basics#1
Diakses pada 3 Agustus 2020Winchester Hospital. https://www.winchesterhospital.org/health-library/article?id=19555
Diakses pada 3 Agustus 2020