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Friedrich M, Gittler G, Pieler-Bruha E.Friedrich M, et al.Eur Spine J. 2006 Dec;15(12):1797-800. doi: 10.1007/s00586-006-0065-4. Epub 2006 Feb 7.Eur Spine J. 2006.PMID: 16463199
Friedrich M, Gittler G, Arendasy M, Friedrich KM.Friedrich M, et al. Among authors: friedrich km.Spine (Phila Pa 1976). 2005 May 1;30(9):995-1000. doi: 10.1097/01.brs.0000160844.71551.af.Spine (Phila Pa 1976). 2005.PMID: 15864148Clinical Trial.
Friedrich M, Gittler G, Halberstadt Y, Cermak T, Heiller I.Friedrich M, et al.Arch Phys Med Rehabil. 1998 May;79(5):475-87. doi: 10.1016/s0003-9993(98)90059-4.Arch Phys Med Rehabil. 1998.PMID: 9596385Clinical Trial.
Salfinger H, Salomonowitz G, Friedrich KM, Hahne J, Holzapfel J, Friedrich M.Salfinger H, et al. Among authors: friedrich km, friedrich m.Eur Spine J. 2015 Jun;24(6):1296-308. doi: 10.1007/s00586-014-3601-7. Epub 2014 Oct 18.Eur Spine J. 2015.PMID: 25326180Clinical Trial.
Friedrich M, Kranzl A, Heiller I, Kirtley C, Cermak T.Friedrich M, et al.Spine (Phila Pa 1976). 2000 May 1;25(9):1118-25. doi: 10.1097/00007632-200005010-00013.Spine (Phila Pa 1976). 2000.PMID: 10788857
Friedrich M, Cermak T, Heiller I.Friedrich M, et al.Int Arch Occup Environ Health. 2000 May;73(4):245-54. doi: 10.1007/s004200050424.Int Arch Occup Environ Health. 2000.PMID: 10877030
Machacek P, Friedrich M.Machacek P, et al. Among authors: friedrich m.Z Orthop Ihre Grenzgeb. 2006 Jan-Feb;144(1):19-26. doi: 10.1055/s-2006-921463.Z Orthop Ihre Grenzgeb. 2006.PMID: 16498556German.
Friedrich M, Rustler T, Hahne J.Friedrich M, et al.Wien Klin Wochenschr. 2006 Mar;118(3-4):82-9. doi: 10.1007/s00508-006-0532-2.Wien Klin Wochenschr. 2006.PMID: 16703251German.
Friedrich KM, Trattnig S, Millington SA, Friedrich M, Groschmidt K, Pretterklieber ML.Friedrich KM, et al. Among authors: friedrich m.Spine (Phila Pa 1976). 2007 Jan 15;32(2):244-8. doi: 10.1097/01.brs.0000251952.36735.fb.Spine (Phila Pa 1976). 2007.PMID: 17224821