. . . . . . . "LIDDI_resource:SID0790_SID2910_EID4970" . "DDI between memantine and sildenafil - Event - Bradycardia."@en . . "DDI between memantine and sildenafil - Event - Bradycardia. [LIDDI_resource:SID0790_SID2910_EID4970]"@en . . "Webcrawled and annotated using indicated method"@en . . . "2016-04-06T15:05:02.609204"^^ . . . . "2016-04-06T15:05:02.609216"^^ . .