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What are cohort studies?
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Aug 201984711
Sep 201927919238
Oct 201970372168
Nov 201911841196120
Dec 201976978557
Jan 202012201182108
Feb 20201371133879
Mar 202022132172142
Apr 202022282185159
May 202018651804163
Jun 202015561521118
Jul 202012971281105
Aug 20201265122097
Sep 202016481620133
Oct 202025902576188
Nov 202034923470199
Dec 202030833074283
Jan 202139303913302
Feb 202147544735365
Mar 202152795261409
Apr 202140013994364
May 202141524155405
Jun 202130253033306
Jul 202130993093287
Aug 202138873874338
Sep 202160246031436
Oct 202171697159643
Nov 202169406951587
Dec 202160046055443
Jan 202257055925444
Feb 202269317176513
Mar 202265346691544
Apr 202255055642394
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Nov 202276177685425
Dec 202250465096312
Total15609215732211839