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European Journal of Pain > 2009 > 13 > 6 > 582-587
International Journal of Cardiology > 2001 > 79 > 2-3 > 207-214
European Journal of Pain > 2009 > 13 > 6 > 582-587
International Journal of Cardiology > 2001 > 79 > 2-3 > 207-214