. . . . . . . "LIDDI_resource:SID2910_SID0728_EID4964" . "DDI between sildenafil and lactulose - Event - Serotonin syndrome."@en . . "DDI between sildenafil and lactulose - Event - Serotonin syndrome. [LIDDI_resource:SID2910_SID0728_EID4964]"@en . . "Webcrawled and annotated using indicated method"@en . . . "2016-04-06T15:04:37.295882"^^ . . . . "2016-04-06T15:04:37.295893"^^ . .