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Volume 95, Issue 8
Case–control or cohort study?
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Letter
Case–control or cohort study?
Online download statistics by month:
Online download statistics by month: March 2011 to February 2024
Abstract
Full
Pdf
Mar 2011
5
4
18
Apr 2011
6
1
10
May 2011
21
1
4
Jun 2011
33
1
1
Jul 2011
70
8
27
Aug 2011
23
7
16
Sep 2011
7
1
8
Oct 2011
7
1
5
Nov 2011
21
2
3
Dec 2011
33
6
3
Jan 2012
12
3
2
Feb 2012
11
2
7
Mar 2012
14
3
1
Apr 2012
10
3
3
May 2012
13
2
1
Jun 2012
7
0
0
Jul 2012
11
3
2
Aug 2012
7
0
0
Sep 2012
8
5
2
Oct 2012
8
30
1
Nov 2012
0
1
2
Dec 2012
0
0
1
Jan 2013
0
2
1
Feb 2013
0
1
3
Apr 2013
0
0
1
May 2013
0
2
1
Jun 2013
13
0
0
Jul 2013
5
2
0
Aug 2013
3
4
0
Sep 2013
4
30
0
Oct 2013
4
34
1
Nov 2013
7
0
2
Dec 2013
4
1
0
Jan 2014
8
0
0
Feb 2014
1
0
1
Mar 2014
7
0
0
Apr 2014
8
0
1
May 2014
12
2
1
Jul 2014
4
1
2
Aug 2014
3
1
1
Sep 2014
4
3
1
Nov 2014
3
1
1
Dec 2014
4
1
0
Jan 2015
3
0
1
Mar 2015
1
0
0
Apr 2015
4
0
0
May 2015
5
0
1
Jun 2015
0
0
2
Jul 2015
2
1
0
Aug 2015
6
0
0
Nov 2015
3
0
0
Dec 2015
6
0
1
Jan 2016
4
0
0
Feb 2016
0
1
0
Mar 2016
1
1
0
Apr 2016
4
1
0
Jun 2016
3
0
0
Jul 2016
7
0
0
Aug 2016
7
0
0
Sep 2016
12
0
0
Oct 2016
10
1
1
Nov 2016
7
0
0
Dec 2016
9
0
0
Jan 2017
5
0
0
Feb 2017
10
2
0
Mar 2017
9
0
0
Apr 2017
11
0
0
May 2017
7
1
1
Jun 2017
7
1
0
Jul 2017
19
0
0
Aug 2017
20
3
1
Sep 2017
113
1
0
Oct 2017
238
0
0
Nov 2017
120
10
1
Dec 2017
70
18
0
Jan 2018
42
13
0
Feb 2018
56
11
0
Mar 2018
33
11
1
Apr 2018
28
10
0
May 2018
20
8
0
Jun 2018
43
12
0
Jul 2018
19
13
0
Aug 2018
30
14
0
Sep 2018
20
14
0
Oct 2018
27
7
0
Nov 2018
22
8
0
Dec 2018
20
9
0
Jan 2019
32
8
0
Feb 2019
23
9
0
Mar 2019
8
0
0
Apr 2019
6
0
0
May 2019
21
5
1
Jun 2019
19
11
1
Jul 2019
15
9
0
Aug 2019
17
9
0
Sep 2019
16
10
1
Oct 2019
33
8
0
Nov 2019
10
8
0
Dec 2019
15
11
1
Jan 2020
16
8
0
Feb 2020
20
9
0
Mar 2020
13
9
0
Apr 2020
14
10
0
May 2020
23
11
0
Jun 2020
29
14
1
Jul 2020
20
8
0
Aug 2020
13
7
0
Sep 2020
52
14
2
Oct 2020
23
8
0
Nov 2020
13
0
0
Dec 2020
32
0
0
Jan 2021
21
0
0
Feb 2021
16
0
0
Mar 2021
6
0
0
Apr 2021
9
0
0
May 2021
2
0
0
Jul 2021
1
1
0
Aug 2021
1
0
0
Sep 2021
1
1
0
Oct 2021
11
0
0
Nov 2021
16
0
0
Dec 2021
14
0
2
Jan 2022
24
4
0
Feb 2022
14
0
0
Mar 2022
20
0
0
Apr 2022
12
2
1
May 2022
36
0
0
Jun 2022
42
1
0
Jul 2022
24
1
0
Aug 2022
42
0
0
Sep 2022
28
1
1
Oct 2022
52
1
0
Nov 2022
20
0
0
Dec 2022
14
2
0
Jan 2023
22
1
1
Feb 2023
48
0
0
Mar 2023
6
0
0
Apr 2023
1
0
0
May 2023
16
0
0
Jun 2023
10
0
0
Jul 2023
10
0
0
Aug 2023
2
0
0
Sep 2023
2
0
0
Oct 2023
20
0
0
Nov 2023
22
0
0
Dec 2023
29
1
0
Jan 2024
17
0
0
Feb 2024
6
0
0
Total
2624
542
156
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