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Retraction notice
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Online download statistics by month: December 2015 to July 2022

AbstractFullPdf
Dec 20152399848
Jan 20161494139
Feb 2016602240
Mar 2016181161
Apr 201617625
May 201645713
Jun 201655810
Jul 201624311
Aug 20162439
Sep 20163381
Oct 2016311113
Nov 201636416
Dec 201628126
Jan 20173292
Feb 2017522
Mar 2017020
Apr 20171140
May 20170106
Jun 20175176
Jul 201712124
Aug 201715155
Sep 201762621
Oct 20171391372
Nov 201746464
Dec 201742421
Jan 201824240
Feb 201830282
Mar 201828261
Apr 201825212
May 201837356
Jun 201825230
Jul 201828260
Aug 201852521
Sep 201848484
Oct 201838382
Nov 201829291
Dec 201854543
Jan 201930280
Feb 201938361
Mar 201920204
Apr 201912126
May 201935355
Jun 201939399
Jul 201933349
Aug 201927272
Sep 201917172
Oct 201922224
Nov 201917173
Dec 201926265
Jan 202031316
Feb 202025251
Mar 202024246
Apr 202030305
May 202020207
Jun 202033332
Jul 202025253
Aug 202018183
Sep 202031315
Oct 202028283
Nov 202017178
Dec 202027181
Jan 202118176
Feb 2021212159
Mar 202118183
Apr 202116167
May 202110104
Jun 202111111
Jul 2021885
Aug 2021774
Sep 202112128
Oct 20219919
Nov 20215513
Dec 202111115
Jan 202214147
Feb 202211112
Mar 202210104
Apr 2022881
May 202228299
Jun 202217165
Jul 202215151
Total24101867610