BMC Palliative Care

unofficial impact factor 1.62

Open Access Research article

An open-label, 1-year extension study of the long-term safety and efficacy of once-daily OROS® hydromorphone in patients with chronic cancer pain

Magdi Hanna, Alberto Tuca and John Thipphawong*

BMC Palliative Care 2009, 8:14 doi:10.1186/1472-684X-8-14

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