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Ha JK, Shim JC, Kim DW, Lee YS, Ra HJ, Kim JG.Ha JK, et al. Among authors: ra hj.Am J Sports Med. 2010 Dec;38(12):2448-55. doi: 10.1177/0363546510375550. Epub 2010 Sep 7.Am J Sports Med. 2010.PMID: 20823281
Kim JG, Lee YS, Bae TS, Ha JK, Lee DH, Kim YJ, Ra HJ.Kim JG, et al. Among authors: ra hj.Knee Surg Sports Traumatol Arthrosc. 2013 Sep;21(9):2121-5. doi: 10.1007/s00167-012-2182-4. Epub 2012 Sep 7.Knee Surg Sports Traumatol Arthrosc. 2013.PMID: 22955146
Kim MK, Lee SR, Ha JK, Ra HJ, Kim SB, Kim JG.Kim MK, et al. Among authors: ra hj.Knee. 2014 Jun;21(3):774-8. doi: 10.1016/j.knee.2014.02.011. Epub 2014 Feb 24.Knee. 2014.PMID: 24704171
Ra HJ, Kim HS, Choi JY, Ha JK, Kim JY, Kim JG.Ra HJ, et al.Knee. 2014 Oct;21(5):906-10. doi: 10.1016/j.knee.2014.06.004. Epub 2014 Jun 21.Knee. 2014.PMID: 24998912
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Chung KS, Ha JK, Ra HJ, Kim JG.Chung KS, et al. Among authors: ra hj.Knee Surg Sports Traumatol Arthrosc. 2016 May;24(5):1455-68. doi: 10.1007/s00167-015-3832-0. Epub 2015 Oct 22.Knee Surg Sports Traumatol Arthrosc. 2016.PMID: 26493550Review.
Chung KS, Ha JK, Ra HJ, Kim JG.Chung KS, et al. Among authors: ra hj.Arthroscopy. 2016 Jul;32(7):1319-27. doi: 10.1016/j.arthro.2015.12.046. Epub 2016 Mar 4.Arthroscopy. 2016.PMID: 26952089
Chung KS, Ha JK, Ra HJ, Nam GW, Kim JG.Chung KS, et al. Among authors: ra hj.Am J Sports Med. 2017 Jan;45(1):42-49. doi: 10.1177/0363546516662445. Epub 2016 Oct 1.Am J Sports Med. 2017.PMID: 27558809