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Purpose: Understanding seasonal variation in physical activity is important for informing public health surveillance and intervention design. The aim of the current study was to describe seasonal vari...
Background: Suicide rates among Alaska Natives in rural Alaska are almost 16 times higher than the national average. Some studies in northern latitudes have shown seasonal variation among suicide rate...
Background: a variety of studies have noted seasonal variation in blood lipid levels, yet the mechanism for this phenomenon has not been clear. This leads to significant difference in prevalence of li...
A six month Survey (May-October1994) was conducted, to study natural promastigote infection of S.sintoni, its seasonal variation and reservoir host, in Turkemen Sahra, Iran. Sixty out of 403 S.sintoni...
The chronobiology of the acute myocardial infarction (AMI) is an interesting matter for recognition of the biological mechanism that might trigger AMI. The present study was aimed to investigate the c...
Background: The effect of season on vitamin D status is often overlooked in studies of optimal vitamin D concentrations and in clinical practice.
We thank Drs. Mendeluk and Curi for their letter regarding our recently published article, "Seasonal Variation and Age-Related Changes in Human Semen Parameters." It is interesting that they also fo...
The study of seasonal variation in human semen parameters has, in our opinion, two different aspects—individual and demographic. The first refers to the consideration of each patient by an evaluatio...
Although semen quality has been discussed extensively with regard to age and season in the andrology literature, the results vary and firm conclusions are still outstanding. To investigate seasona...
The total number of new attendant patients diagnosed as having atopic dermatitis at our dermatology out-patient clinic during the 7 year period from 1989 to 1995 was 10 156. Patients from each year du...

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