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Observational studies have led to speculation that antenatal vitamin D supplementation may reduce the risk of offspring atopic eczema, but currently there are no proven general population preventive interventions. In Maternal Vitamin Osteoporosis Study double-blind, randomized, placebo-controlled trial, we examined link between maternal (from 14 weeks’ gestation until delivery) with cholecalcif...
بررسی ریسک فاکتورهای آپاندیسیت پرفوره وغیر پرفوره در دو بیمارستان دانشگاهی بابل، سالهای 1382- 1380
Background: The early diagnosis of acute appendicitis before progression to gangrene or abscess formation is recognized as important to minimize morbidity from this common disease process. The aim of this study was to assess the value of different risk factors in the diagnosis of perforation. Methods: This descriptive-analytic and retrospective study was conducted to investigate epidemiologica...
Observational studies suggest a longer duration of breastfeeding to be associated dose dependently with a decrease in risk of overweight in later life. The authors performed a comprehensive meta-analysis of the existing studies on duration of breastfeeding and risk of overweight. Studies were included that reported the odds ratio and 95% confidence interval (or the data to calculate them) of ov...
in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...
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