array(3) {
  [0]=>
  int(4395)
  [1]=>
  string(419) "Kiselev A. R., Gridnev V. I., Prokhorov M. D., Karavaev A. S., Posnenkova O. M., Ponomarenko V. I., Bezruchko B. P. Selection of Optimal Dose of Beta-blocker Treatment in Myocardial Infarction Patients Basing on Changes in Synchronization Between 0.1 Hz Oscillations in Heart Rate and Peripheral Microcirculation // Journal of Cardiovascular Medicine. 2012. Vol. 13. Iss. 8. P. 491-498. doi:10.2459/JCM.0b013e3283512199"
  [2]=>
  int(1)
}
<h1>DB Error 230: Duplicate entry '4395-1' for key 'citations.citations_submission_seq'</h1>