The cancer pain relief programme of the World Health Organization
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1996 ◽
Vol 12
(2)
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pp. 87-92
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1986 ◽
Vol 1
(1)
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pp. 53-57
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1986 ◽
Vol 1
(3)
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pp. 178-179
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2020 ◽
Vol 23
(9)
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pp. 1167-1171
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1991 ◽
Vol 6
(7)
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pp. 411-422
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