These findings must be interpreted in light of several limitations. First, the cross-sectional nature of these data precludes statements about causality or temporality in the relationship between social environmental factors and latent class membership. Second…

This study is subject to certain limitations. First, the findings apply only to youth who attend high school and may not represent all persons in this age group. Second, indoor tanningwas is self-reported, and the degree of misreporting cannot be determined. A…

This study has several strengths, but there is also a set of potential study limitations to consider when interpreting the results. 出处：Association of Maternal Eating Disorders With Pregnancy and Neonatal Outcomes JAMA Psychiatry. Published online November 20, …

These new findings should be examined alongside several study limitations. First, Second, Third, 出处：Adverse Childhood Experiences and Adult Risk Factors for Age-Related Disease https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3560401/

This study is not without limitations. First, these data cannot explain underlying reasons for Second, Third, it is unknown whether has changed during the study period. Fourth, 出处：Trends in Suicide Among Youth Aged 10 to 19 Years in the United States, 1975 to …

Our study has some limitations.First,Second,Third,Fourth,Fifth, 出处：Nonconforming Gender Expression and Associated Mental Distress and Substance Use Among High School Students. JAMA Pediatr. doi:10.1001/jamapediatrics.2018.2140