background: the high prevalence and potential side effects of anabolic-androgenic steroids (aas) misuse by athletes has made it a major public health concern. epidemiological studies on the abuse of such drugs are mandatory for developing effective preventive drug control programs in sports community. this study aimed to investigate the prevalence of aas abuse and their association with some ps...

BACKGROUND The overall incidence of male breast cancer is around 1% of all breast cancers and is on the rise. In this review we aim to present various aspects of male breast cancer with particular emphasis on incidence, risk factors, patho-physiology, treatment, prognostic factors, and outcome. METHODS Information on all aspects of male breast cancer was gathered from available relevant liter...

This article presents the results of a study relationship between increase in radiation background uranium production facilities and coefficient radioactive equilibrium radionuclides decay chain. A theoretical calculation formula for mixing daughter is given and, based on this formula; distance chain calculated. It has been established that reason violation radionuclides.

A multicenter retrospective cohort study was conducted to clarify the differences in occurrence of placental abruption between placenta with and without the Y chromosome. We reviewed the chart records from the database of the Japan Perinatal Registry Network during the period from January to December 2009. 348 women were included. Risk factors were compared to those of pregnant women with a fem...