1 While some
observational studies have assessed the cardiovascular safety
2 Observational studies have associated omega-3 intake, includi
3 Observational studies have associated patent ductus arteriosu
4 Purpose Recent
observational studies have associated the use of androgen dep
5 Numerous
observational studies have attempted to identify risk factors
6 Observational studies have consistently shown that a high BMI
7 Observational studies have consistently shown that influenza
8 Recent
observational studies have demonstrated an association betwee
9 Observational studies have demonstrated the effectiveness of
10 Although previous
observational studies have documented late luminal enlargemen
11 Although several
observational studies have explored optimal treatment for Amp
12 Observational studies have found associations between urinary
13 RATIONALE:
Observational studies have found shorter leukocyte telomere l
14 Critically, while registry data and
observational studies have helped to identify factors that ar
15 Observational studies have identified an association between
16 Observational studies have identified height as a strong risk
17 Clinical
observational studies have identified potential modifiable an
18 Previous
observational studies have implied breastmilk fatty acid comp
19 Small
observational studies have indicated better outcome with intr
20 caused by diverse etiologies, especially severe sepsis, and
observational studies have linked CMV reactivation with worse
21 Observational studies have linked low vitamin D status to unf
22 Two quasi-experimental studies and 5
observational studies had low risk of bias.
23 There were few SARS-CoV-2 studies,
observational studies have methodological limitations, and th
24 In longitudinal
observational studies, having more exposure data in the form
25 Observational studies have not yet shown that environmental v
26 Experimental and
observational studies have raised concerns that giving intrav
27 Observational studies have reported a high prevalence of extr
28 Recent
observational studies have reported associations between lung
29 Observational studies have reported associations between mate
30 Observational studies have reported conflicting results with
31 Observational studies have reported that black and Hispanic a
32 target for clinical and public health studies, but previous
observational studies had short follow-up, making findings su
33 Purpose Small
observational studies have shown a survival advantage to unde
34 Several
observational studies have shown decreases in measured influe
35 arly in pregnancy, is prevalent; this is of concern because
observational studies have shown negative associations with c
36 Observational studies have shown that body mass index (BMI) i
37 Observational studies have shown that both phylloquinone and
38 Observational studies have shown that elevated systolic blood
39 Several small experimental studies and cross-sectional
observational studies have shown that exposure to the natural
40 Observational studies have shown that higher body mass index
41 Numerous
observational studies have shown that infants born after shor
42 Numerous
observational studies have shown that water quality, sanitati
43 Although sparse
observational studies have suggested a link between migraine
44 Observational studies have suggested an inverse association b
45 More recently, animal and
observational studies have suggested potential adverse effect
46 Observational studies have suggested several adverse effects
47 Observational studies have suggested that earlier surgery cou
48 Prior
observational studies have suggested that medications targeti
49 Observational studies have suggested that physical activity m
50 Some
observational studies have suggested that this regimen may le