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Volume 74, Issue 2
Comparison of gestational dating methods and implications for exposure–outcome associations: an example with PM2.5 and preterm birth
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Original article
Comparison of gestational dating methods and implications for exposure–outcome associations: an example with PM
2.5
and preterm birth
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Online download statistics by month: October 2016 to February 2024
Abstract
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Oct 2016
136
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Nov 2016
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Dec 2016
102
4
69
Jan 2017
536
16
25
Feb 2017
314
5
21
Mar 2017
58
12
13
Apr 2017
36
10
0
May 2017
32
6
4
Jun 2017
55
5
5
Jul 2017
87
5
4
Aug 2017
119
8
8
Sep 2017
108
10
5
Oct 2017
90
7
3
Nov 2017
93
6
5
Dec 2017
102
8
6
Jan 2018
76
8
4
Feb 2018
88
8
4
Mar 2018
60
7
3
Apr 2018
108
10
4
May 2018
101
1
5
Jun 2018
105
1
2
Jul 2018
70
4
0
Aug 2018
74
0
0
Sep 2018
66
0
0
Oct 2018
55
3
1
Nov 2018
51
4
0
Dec 2018
61
1
1
Jan 2019
26
0
0
Feb 2019
25
3
2
Mar 2019
41
5
0
Apr 2019
46
1
1
May 2019
13
0
0
Jun 2019
16
3
2
Jul 2019
32
2
4
Aug 2019
24
1
1
Sep 2019
18
1
0
Oct 2019
11
0
0
Nov 2019
18
4
2
Dec 2019
32
4
2
Jan 2020
17
1
1
Feb 2020
14
1
0
Mar 2020
9
1
0
Apr 2020
9
1
0
May 2020
32
3
0
Jun 2020
27
0
0
Jul 2020
30
2
1
Aug 2020
21
1
0
Sep 2020
42
0
0
Oct 2020
38
1
2
Nov 2020
33
2
1
Dec 2020
19
1
0
Jan 2021
17
2
2
Feb 2021
16
0
0
Mar 2021
32
0
2
Apr 2021
22
0
0
May 2021
3
3
1
Jul 2021
1
0
0
Aug 2021
2
2
0
Sep 2021
1
1
0
Oct 2021
50
7
2
Nov 2021
35
2
1
Dec 2021
17
2
0
Jan 2022
15
1
0
Feb 2022
18
0
0
Mar 2022
32
0
0
Apr 2022
19
1
0
May 2022
56
0
0
Jun 2022
64
1
0
Jul 2022
28
1
1
Aug 2022
65
9
1
Sep 2022
45
0
0
Oct 2022
45
2
0
Nov 2022
39
5
1
Dec 2022
16
1
1
Jan 2023
10
0
0
Feb 2023
9
1
0
Mar 2023
18
3
0
Apr 2023
31
2
0
May 2023
18
2
1
Jun 2023
26
2
1
Jul 2023
13
1
0
Aug 2023
21
1
3
Sep 2023
7
0
0
Oct 2023
24
2
0
Nov 2023
26
4
0
Dec 2023
58
4
3
Jan 2024
19
1
1
Feb 2024
19
1
0
Total
4471
263
250
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