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Volume 68, Issue 2
Should protocols for observational research be registered?
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Should protocols for observational research be registered?
Online download statistics by month:
Online download statistics by month: December 2010 to March 2024
Abstract
Full
Pdf
Dec 2010
69
6
25
Jan 2011
120
63
36
Feb 2011
33
20
15
Mar 2011
11
14
9
Apr 2011
28
16
5
May 2011
21
2
3
Jun 2011
11
1
4
Jul 2011
8
3
2
Aug 2011
8
1
3
Sep 2011
11
0
0
Oct 2011
9
4
2
Nov 2011
38
4
1
Dec 2011
51
0
1
Jan 2012
31
0
1
Feb 2012
18
1
1
Mar 2012
15
0
2
Apr 2012
13
1
0
May 2012
18
2
5
Jun 2012
6
2
0
Jul 2012
7
1
0
Aug 2012
6
0
1
Sep 2012
9
1
2
Oct 2012
20
0
0
Nov 2012
0
2
4
Dec 2012
0
1
1
Jan 2013
0
1
1
Feb 2013
0
1
1
Mar 2013
0
0
3
May 2013
0
1
4
Jun 2013
3
1
2
Jul 2013
8
0
0
Aug 2013
2
0
1
Sep 2013
13
1
3
Oct 2013
7
0
0
Nov 2013
5
0
1
Dec 2013
6
2
1
Jan 2014
5
0
1
Feb 2014
5
0
0
Mar 2014
15
2
0
Apr 2014
24
2
2
May 2014
13
0
1
Jun 2014
1
0
0
Jul 2014
8
1
1
Aug 2014
3
0
1
Sep 2014
5
0
0
Oct 2014
7
3
2
Nov 2014
3
1
1
Dec 2014
2
3
2
Jan 2015
5
0
0
Feb 2015
2
0
0
Mar 2015
8
2
2
Apr 2015
7
0
0
May 2015
5
1
2
Jun 2015
7
0
1
Jul 2015
14
0
1
Aug 2015
1
0
0
Sep 2015
10
0
0
Oct 2015
2
0
1
Nov 2015
0
1
0
Dec 2015
2
0
2
Jan 2016
1
0
2
Apr 2016
3
1
1
May 2016
5
3
3
Jun 2016
2
0
0
Jul 2016
6
1
6
Aug 2016
6
0
0
Sep 2016
5
0
0
Oct 2016
10
0
0
Nov 2016
9
1
2
Dec 2016
15
2
0
Jan 2017
6
0
0
Feb 2017
7
2
2
Mar 2017
12
0
0
Apr 2017
11
1
4
May 2017
13
0
0
Jun 2017
18
1
1
Jul 2017
28
0
0
Aug 2017
22
0
0
Sep 2017
28
0
1
Oct 2017
20
0
1
Nov 2017
37
0
0
Dec 2017
20
0
0
Jan 2018
45
1
0
Feb 2018
8
0
0
Mar 2018
49
0
0
Apr 2018
32
0
0
May 2018
44
0
0
Jun 2018
42
1
1
Jul 2018
23
2
0
Aug 2018
28
0
0
Sep 2018
24
0
0
Oct 2018
13
0
1
Nov 2018
37
1
0
Dec 2018
30
1
0
Jan 2019
14
0
0
Feb 2019
12
0
0
Mar 2019
18
0
0
Apr 2019
20
0
0
May 2019
16
1
2
Jun 2019
20
0
2
Jul 2019
14
2
3
Aug 2019
19
2
1
Sep 2019
8
0
0
Oct 2019
24
2
2
Nov 2019
15
2
3
Dec 2019
23
1
2
Jan 2020
12
0
1
Feb 2020
10
0
0
Mar 2020
21
0
3
Apr 2020
15
3
3
May 2020
18
0
0
Jun 2020
22
1
3
Jul 2020
24
0
0
Aug 2020
12
1
2
Sep 2020
29
1
0
Oct 2020
28
0
0
Nov 2020
22
2
1
Dec 2020
12
0
0
Jan 2021
22
1
0
Feb 2021
34
0
2
Mar 2021
4
0
0
Apr 2021
8
0
0
May 2021
4
1
1
Jun 2021
1
0
0
Aug 2021
4
4
0
Oct 2021
25
4
4
Nov 2021
18
2
0
Dec 2021
27
3
0
Jan 2022
24
2
2
Feb 2022
12
0
0
Mar 2022
28
2
0
Apr 2022
18
2
0
May 2022
44
0
0
Jun 2022
47
5
1
Jul 2022
34
1
1
Aug 2022
67
1
0
Sep 2022
50
1
0
Oct 2022
36
0
0
Nov 2022
39
1
0
Dec 2022
15
0
0
Jan 2023
19
3
2
Feb 2023
59
1
0
Mar 2023
6
0
0
Apr 2023
15
3
1
May 2023
24
4
0
Jun 2023
5
1
0
Jul 2023
23
3
2
Aug 2023
2
0
0
Sep 2023
17
1
0
Oct 2023
23
1
0
Nov 2023
20
0
0
Dec 2023
35
1
0
Jan 2024
28
4
0
Feb 2024
12
0
0
Mar 2024
11
0
0
Total
2706
256
229
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