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Correspondence
Letter to the editor: authors’ response
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Online download statistics by month: January 2015 to January 2021

AbstractFullPdf
Jan 20154043
Feb 20151282511
Mar 20153041
Apr 2015280816
May 20158688
Jun 2015461513
Jul 20155332
Aug 201534115
Sep 20154141
Oct 20153421
Nov 20154673
Dec 20155602
Jan 20165223
Feb 20163402
Mar 20162910
Apr 20163405
May 20162602
Jun 20163325
Jul 20162910
Aug 20162510
Sep 20162612
Oct 20163211
Nov 20161610
Dec 20161901
Jan 20171300
Feb 20172860
Mar 20171300
Apr 20171594
May 20171181
Jun 20171900
Jul 20173040
Aug 20173940
Sep 20173611
Oct 20174010
Nov 20172824
Dec 20174431
Jan 20183000
Feb 201830180
Mar 201818100
Apr 201826160
May 201814140
Jun 201819192
Jul 201816161
Aug 201817172
Sep 201810105
Oct 201812125
Nov 201821211
Dec 201810105
Jan 2019991
Feb 201911114
Mar 201910104
Apr 2019222
May 2019444
Jun 2019555
Jul 2019773
Aug 2019884
Sep 2019442
Oct 2019201813
Nov 2019222
Dec 2019992
Jan 2020883
Feb 202015133
Mar 2020222
Apr 2020554
May 2020662
Jun 2020873
Jul 2020883
Aug 2020222
Sep 202015154
Oct 20201084
Nov 2020437
Dec 2020332
Jan 2021131110
Total1958482214