"1989-11-01T00:00:00Z"^^ . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@nl . . "T R Tickner" . . "C M Dawson" . "article scientifique publi\u00E9 en 1989"@fr . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@en . "10.1177/000456328902600612" . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u043B\u0438\u0441\u0442\u043E\u043F\u0430\u0434\u0456 1989"@uk . . "2619232" . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@nl . . "527-532" . . "wetenschappelijk artikel"@nl . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@en . . . "im November 1989 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@en . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en payares de 1989"@ast . . . . . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@nl . "Non-extraction HPLC method for the simultaneous measurement of theophylline and caffeine in human serum"@en . "26 ( Pt 6)" . "scientific article published on 01 November 1989"@en . . . . . "S J Rainbow" .