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		Achmad, A., 		Jawi, I., 		Sugijanto, S., 		Ratna S, L., 		Iswari, I., & 		Adiartha G, I.
2020 May 27.  MCKENZIE NECK EXERCISE DAN FORWARD HEAD POSTURE EXERCISE DAPAT MENURUNKAN NYERI LEHER MEKANIK PADA PENGGUNA SMARTPHONE. Sport and Fitness Journal. [Online] 8:2