Article metrics

Download PDFPDF

Payment for research participation: a coercive offer?
Free

 

Online download statistics by month:

Online download statistics by month: April 2008 to September 2024

AbstractFullPdf
Apr 200844617
May 2008106368166
Jun 200859316157
Jul 20083210841
Aug 2008138930
Sep 2008225926
Oct 2008258224
Nov 2008344128
Dec 2008215631
Jan 2009137014
Feb 2009216235
Mar 200986313
Apr 200946914
May 200949311
Jun 20095299
Jul 2009215118
Aug 200932814
Sep 2009164123
Oct 2009185734
Nov 200997221
Dec 2009136915
Jan 2010497918
Feb 20107812140
Mar 20106011611
Apr 2010166822
May 201099217
Jun 2010255535
Jul 201064816
Aug 2010172716
Sep 2010344429
Oct 2010188325
Nov 2010165018
Dec 2010164423
Jan 2011115722
Feb 2011145217
Mar 2011215724
Apr 2011105932
May 2011144124
Jun 2011125527
Jul 2011184918
Aug 2011153716
Sep 2011305825
Oct 2011134920
Nov 20111675191
Dec 2011746335
Jan 2012398937
Feb 2012316434
Mar 2012377524
Apr 2012398726
May 2012278424
Jun 2012298624
Jul 2012295618
Aug 2012384413
Sep 2012225714
Oct 2012405426
Nov 2012197446
Dec 2012225411
Jan 2013356420
Feb 20134624087
Mar 20133311333
Apr 2013598524
May 2013679737
Jun 2013405338
Jul 201393610
Aug 201310179
Sep 2013264212
Oct 201319386
Nov 2013345216
Dec 2013253516
Jan 20149458
Feb 201426529
Mar 2014417126
Apr 2014456930
May 2014329323
Jun 2014304417
Jul 2014333012
Aug 201422166
Sep 2014292618
Oct 2014284410
Nov 2014334320
Dec 201413279
Jan 2015263910
Feb 2015164317
Mar 2015295919
Apr 2015255418
May 2015276520
Jun 2015263714
Jul 2015243814
Aug 201517267
Sep 2015357225
Oct 201514437
Nov 2015354821
Dec 201515336
Jan 2016184017
Feb 2016165113
Mar 2016496121
Apr 2016188315
May 2016326927
Jun 201610397
Jul 2016116718
Aug 201675014
Sep 2016115511
Oct 2016206312
Nov 2016117312
Dec 20163437
Jan 201711396
Feb 20174198
Mar 20172489
Apr 201726012
May 201707015
Jun 2017164416
Jul 2017432110
Aug 2017732510
Sep 2017836718
Oct 2017704213
Nov 201779617
Dec 20171741614
Jan 20181681649
Feb 201815111821
Mar 201815113018
Apr 20181318329
May 2018746024
Jun 201857468
Jul 201850408
Aug 2018746820
Sep 2018423411
Oct 201869495
Nov 2018908012
Dec 201812310314
Jan 20191119211
Feb 20191229819
Mar 2019805926
Apr 2019643627
May 2019653922
Jun 2019351912
Jul 2019654816
Aug 2019363010
Sep 2019563722
Oct 20191037428
Nov 2019604416
Dec 2019503014
Jan 2020884722
Feb 20201077631
Mar 2020705023
Apr 2020694120
May 2020753615
Jun 202028249
Jul 2020573913
Aug 202041334
Sep 20201118611
Oct 2020553513
Nov 2020794432
Dec 2020615218
Jan 2021857119
Feb 20211008630
Mar 2021706125
Apr 20211006128
May 202111710034
Jun 2021494822
Jul 2021444426
Aug 2021757328
Sep 2021838226
Oct 2021997656
Nov 20211359259
Dec 20211127117
Jan 2022796524
Feb 2022816630
Mar 20221449434
Apr 2022877631
May 2022796033
Jun 2022723724
Jul 2022674710
Aug 2022594720
Sep 2022794523
Oct 2022997839
Nov 20221166023
Dec 20221118040
Jan 20231116334
Feb 2023765718
Mar 202316510630
Apr 20231366824
May 2023806322
Jun 20231049028
Jul 20231127849
Aug 2023916923
Sep 202315510423
Oct 202314410016
Nov 202315513216
Dec 202315413914
Jan 202489759
Feb 20241019217
Mar 202413612497
Apr 202416815639
May 202431228722
Jun 202422521724
Jul 202415514430
Aug 202418717023
Sep 202423222721
Total11349137974628