background: we are living in an era in which different branches of science are growing very rapidly. therefore, retrieving and summarizing all new valid findings on a specific subject is one of the most important priorities of scientists. the aim of the present article is to categorize different review studies within the health domain based on their approach to retrieving and summarizing origin...

High tibia osteotomy is a common procedure in orthopedic surgery. A precise overview on indications, patients selection, pre-operative planning, surgical technique, methods of fixation, and complications have been presented. This paper focused on the points that should be considered to achieve good long-term outcomes. High tibia osteotomy is a common procedure in orthopedic surgery. A precise o...

helicobacter pylori (h. pylori) is a spiral-shaped gram negative bacterium that naturally colonizes the human gastric epithelium. in recent years, large evidence has come to the literature strongly proposing causal link between h. pylori and extra gastric disorders. cardiovascular system is one of the extra gastric organs that can be affected by h. pylori infection. the first evidence suggestiv...

background recently there has been a significant increase in the number of systematic reviews addressing questions of prevalence. key features of a systematic review include the creation of an a priori protocol, clear inclusion criteria, a structured and systematic search process, critical appraisal of studies, and a formal process of data extraction followed by methods to synthesize, or combin...

background: it is hypothesized that poor zinc nutritional status is associated with an increased risk of esophageal cancer (ec), but current evidence is contradictory. since some factors may influence zinc absorption, its status may be better evaluated thorough biomarkers. the objectives of this study were to perform a systematic review on the association of zinc biomarkers with ec in observati...

papaver bracteatum lindly (papaveraceae) is an endemic species of iran which has economic importance in drug industries. the main alkaloid of the plant is thebaine which is used as a precursor of the semi-synthetic and synthetic compounds including codeine and naloxone, respectively. this systematic review focuses on main component of papaver bracteatum and methods used to determine thebaine. a...

purpose every sport has a unique profile of injury and risk of injury. in recent years, there have been numerous attempts at conducting injury prevention trials for specific injuries or for injuries within specific sports to provide evidence useful to the sports medicine and sport community. football has been a focus of a number of randomized injury prevention trials. methods medline was search...

objectives: bloating is a common and bothersome gastrointestinal symptom. despite its high prevalence, associated costs, and effects on the quality of life, very few studies have reported the epidemiology of bloating in iran. through this systematic review, findings and limitations of the current research will be discussed. methods: in march 2012, we searched pubmed, google scholar, scientific ...

background. regarding the lack of comprehensive systematic review on the efficacy of water fluoridation and prevalence of dental fluorosis, the aim of the current research was to systematically study the prevalence of dental fluorosis at different levels of water fluoride in the world and lay emphasis on the amount of fluoride in drinking water. methods. studies were searched in pubmed, scopus,...