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    ["ref_doc_id"]=>
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    ["publisher_code"]=>
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    ["base_code"]=>
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    ["book_code"]=>
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    ["page"]=>
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    ["sort"]=>
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    ["body"]=>
    string(121) "220) Birkett, D. P.: The psychiatric differentiation of senility and arteriosclerosis. Br. J. Psychiat., 120 : 321, 1972."
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    ["doi"]=>
    string(23) "10.1192/bjp.120.556.321"
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