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Journal of Pain and Symptom Management > 2014 > 47 > 4 > 721-730
European Journal of Cardiovascular Nursing > 2009 > 8 > 2 > 91-96
Journal of Pain and Symptom Management > 2014 > 47 > 4 > 721-730
European Journal of Cardiovascular Nursing > 2009 > 8 > 2 > 91-96