background: tehran is the capital of iran with an increasing multiple sclerosis (ms) incidence. a retrospective population-based study was conducted to evaluate the status of ms prevalence and ms incidence trends in tehran province, iran. methods: a population-based study was conducted from 1991 to 2014 in tehran province, the capital city of iran based on iranian ms society (imss) registry sys...

conclusions considering the results, accurate and on time diagnosis of ebv primary infection in both children and adolescents will help prevent unnecessary hospitalization, medication and incorrect medical decisions. in addition, this will decrease further treatment costs and related medical procedures. background many children become infected with epstein-barr virus (ebv) during their childhoo...

patients and methods this study was carried out in 482 hemodialysis patients who had been referred to eight dialysis centers in the mazandaran province in iran from 2012 - 2014. hbs ag, hcv ab, hbs ab and hiv ab were assessed every three months for two years. the patients’ demographic characteristics, including age, gender, area of residence, and duration of dialysis, were noted. the prevalence...

background: evidence shows that the mortality rate of esophageal cancer (ec) in ardabil province is among the highest worldwide. studies on the epidemiological profile of ec in ardabil are scarce. we aim to study the characteristics of ec in ardabil using data from the recently established ardabil cancer registry (acr). materials and methods: this study has been accomplished based on data colle...

background ventilator- associated pneumonia (vap) continues to complicate the course of 8-28 % patients receiving mechanical ventilation. the mortality rate for vap is high, ranges from 24-50% and can reach 76% in some specific settings or when lung infection is caused by high risk pathogens. the etiologic agents widely differ according to the population of patients in an intensive care unit, d...

abstract background: in 1958, silverman demonstrated that maintenance ofbody temperature reduces mortality in low birth weight infants. from the early 1990s it was already recognized that adequate environmental warmth was essential in the case of newborns. however, neonatal hypothermia continues to be a significant issue in developing countries. methods: in order to describe the incidence and s...

background the incidence of inflammatory bowel disease (ibd) varies among different societies. the aim of this study is to determine the incidence rate of ibd in kerman, a city in southeast iran. methods all medical records that indicated a new diagnosis of ulcerative colitis (uc) or crohn`s disease (cd) were retrieved from the gastrointestinal endoscopy and pathology departments of 12 centers ...

food safety is a global concern due to an increasing awareness of consumers concerning exposure of foods to chemicals and contamination with such hazardous biochemicals as dioxins, mycotoxins, pesticides, polycyclic aromatic hydrocarbons, drugs and hormones. patulin is one of the most injurious mycotoxins produced by a variety of molds, particularly aspergillus and penicillium species. based on...

conclusions overall, incidence of birth trauma in kashan city was lower in comparison with most studies. considering existing risk factors, further monitoring on labor, and delivery management in teaching hospitals are recommended to prevent birth injuries. in addition, careful supervision on students and residents' training should be applied in teaching hospitals. patients and methods in this ...

We examine a dual-quaternion formulation for expressing the relative rigid body motion between two objects when incidence constraints are to be observed. The incidences are between points, lines and planes, of the two parts. Both parametric and implicit representations are investigated. Several examples illustrate the techniques .