. . . "2017-07-09" . . . "BMJ" . . "Open Heart" . "2053-3624" . . . "2013" . "865597929" . . . . . . "865597929" . . . . "2013/9999" . . "en" . "Open Heart" . . . . . . "2013" . . "enk" . . "Open Heart" . "2044-6055" . . . . . . "London" .