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Spending an additional 40 min outdoors each day reduces the incidence of myopia among primary school children in China

 

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May 20163315
Jun 20162401519
Jul 2016902023
Aug 201688919
Sep 201685637
Oct 201632431
Nov 20162625
Dec 201621153
Jan 201720033
Feb 20171600
Mar 201731910
Apr 20171162
May 20171732
Jun 20173721
Jul 20175750
Aug 20173864
Sep 20175032
Oct 20174210
Nov 20176921
Dec 20178031
Jan 20189410
Feb 20188723
Mar 2018116143
Apr 2018106107
May 201810332
Jun 20185211
Jul 20188932
Aug 20186521
Sep 20188533
Oct 20186432
Nov 201813662
Dec 201810311
Jan 201911112
Feb 20199800
Mar 20197641
Apr 20193734
May 20194121
Jun 20193710
Jul 20194563
Aug 20195786
Sep 20194931
Oct 20198400
Nov 20195663
Dec 20197810
Jan 20208421
Feb 20203600
Mar 20202123
Apr 20205612
May 20206164
Jun 20202600
Jul 20202103
Aug 20201200
Sep 20206023
Total3329195312