abstract autism is a developmental disability with age of onset in childhood (under 3 years old), which is characterized by definite impairments in social interactions, abnormalities in speech and stereotyped pattern of behaviors. due to the progress of autism in recent decades, a wide range of studies have been done to identify the etiological factors of autism. it has been found that genetic ...

abstract background: the increase in breast cancer incidence has enhanced attention towards breast cancer risk. the aim of this study was to determine the risk of breast cancer and risk perception of women, factors that affect risk perception, and to determine differences between absolute risk and the perception of risk. methods: this cross-sectional study was carried out among 346 women whose ...

background : migrant studies offer a unique opportunity to analyze variation in disease occurrence due to background factors. the role of environmental and lifestyle exposures are of particular interest in cancer research, and migrant studies can be considered as natural experiments in epidemiological research. large numbers of immigrants from different regions of the world and the availability...

Mining operations and mineral-related industries are closely and directly related with the environment. The negative impacts of mining industry on the environment, known as environmental risks, must be controlled and managed in a way to minimize harmful and destructive effects. Environmental risk assessment studies are a suitable step to identify, analyze and rank the risk factors. In this stud...

background: this study examined the association between incident pulmonary tuberculosis (tb) and social and behavioral characteristics in almaty oblast, kazakhstan from 2012 to 2013. methods: we used a matched case-control design to estimate the role of factors for acquiring pulmonary tb. totally 324 individuals were recruited from sep 2012 to mar 2013. participants included 110 tb index cases ...

introduction: andropause is a common clinical entity of advanced age, with a decline in androgen levels in males. many of the signs of male aging are results of this condition with significant decline in their quality of life and adverse effects on multiple organ systems function. androgen deficiency of the aging male (adam) questionnaire is one of the most applied screening tools for androgen ...

abstract: background and aim:cardio vascular diseases (cvds) are important cause of morbidity and mortality in world wide and constitutes a major public health problem in iran . due to increase of cvd in this contex ,the bjective of this study was to describe the prevalence of cardiovascular risk factors amony gonabad urban population. materials and methods:in this cross sectional study , a tot...

background: several environmental and psychosocial risk factors are known for adolescent smoking as the single cause of preventable diseases and premature death. this cross-sectional study aimed to determine the prevalence of cigarette smoking, socio-demographic factors associated with cigarette smoking (age, education level, parents’ job, and family’s socioeconomic statues), and the role of fa...