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van den Hoogen HM, Koes BW, van Eijk JT, Bouter LM.van den Hoogen HM, et al. Among authors: bouter lm.Spine (Phila Pa 1976). 1995 Feb 1;20(3):318-27. doi: 10.1097/00007632-199502000-00010.Spine (Phila Pa 1976). 1995.PMID: 7732468