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Editorial
Thirdhand smoke: here to stay
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Jan 201124716782
Feb 20111419946
Mar 2011865622
Apr 2011582313
May 20111102313
Jun 20115649
Jul 2011825014
Aug 20111298136
Sep 20111189725
Oct 201115910063
Nov 201118713559
Dec 201116610952
Jan 2012926449
Feb 2012693229
Mar 2012813921
Apr 2012854620
May 201212147
Jun 201285210
Jul 20127025
Aug 20128724
Sep 20127514
Oct 201210174
Nov 2012070
Dec 2012061
Jan 2013041
Feb 2013024
Mar 2013038
Apr 2013027
May 2013045
Jun 20134511
Jul 20134447
Aug 20134343
Sep 20134323
Oct 20135735
Nov 201375136
Dec 20134945
Jan 20144941
Feb 20143310
Mar 20145001
Apr 20145333
May 20145033
Jun 20144601
Jul 20143711
Aug 20142523
Sep 20145256
Oct 20144167
Nov 20143332
Dec 20143823
Jan 20155432
Feb 20153635
Mar 20153744
Apr 20154049
May 201529104
Jun 20153465
Jul 201529107
Aug 20152752
Sep 20153272
Oct 20151313
Nov 201527137
Dec 2015351212
Jan 201639194
Feb 201636208
Mar 2016443620
Apr 2016351011
May 201623137
Jun 201629138
Jul 201628158
Aug 201637196
Sep 2016671315
Oct 20165064
Nov 201659146
Dec 201628151
Jan 201739106
Feb 20171542
Mar 201733443
Apr 201722413
May 201710485
Jun 201730633
Jul 201739333
Aug 201730162
Sep 201738281
Oct 201740302
Nov 201736242
Dec 201745372
Jan 201842243
Feb 201876425
Mar 201854381
Apr 20181641396
May 201875671
Jun 201862447
Jul 201849396
Aug 2018113774
Sep 201892684
Oct 20181621083
Nov 2018112823
Dec 2018108860
Jan 2019100813
Feb 2019117955
Mar 201972537
Apr 2019382910
May 201927165
Jun 201934188
Jul 2019362415
Aug 2019121211
Sep 201929155
Oct 201937197
Nov 201937289
Dec 20191077
Jan 202020166
Feb 202043206
Mar 202028184
Apr 202018144
May 202026163
Jun 202019153
Jul 20201081
Aug 20201577
Sep 202050286
Total635037341043