BACKGROUND In a previous study, we found that gallstones were a common occurrence in the high altitude villages of the Peruvian Andes. AIMS To determine if high altitude (> or = 1500 m) is a contributing risk factor for gallstone disease. METHODS We conducted a cross sectional study in a periurban community in Lima, Peru, and compared the prevalence of gallstone disease between coastal nati...

BACKGROUND Native people of the Republic of Sakha (Yakutia) live mostly in northern regions in the so-called "national settlements". Natives usually experience more health-related problems as compared to the total population. As a result, life expectancy at the birth of Natives living in the Republic of Sakha (Yakutia) is lower compared to ethnic groups living in European countries, in the Unit...

Do you have a scientific hero? Two: Calvin Bridges and Barbara McClintock. Bridges' contributions to Drosophila genetics are without parallel. His thesis paper on nondisjunction in 1916 founded the journal Genetics, proved the chromosome theory and is still the foundation of my research plan. To paraphrase Tom Lehrer, " it is sobering to think that by the time Bridges was my age he would be dea...

The Employees of Native and Immigrant Self-Employed Using unique register data for Sweden we can match self-employed persons to their employees. We analyze the national composition of the employees and ask if self-employed immigrants mainly employ workers from their home region and if self-employed natives mainly employ native workers. We find that both natives and immigrants are more likely to...

This study asks whether immigrants suffer more from unemployment than German natives. Differences between these groups in pre-unemployment characteristics, the type of the transition into unemployment, and the consequences of this transition suggest that factors intensifying the negative impact of unemployment on subjective well-being are more concentrated in immigrants than in natives. Based o...

Following Swales’s (1981) works on genre analysis, studies on different sections of Research Articles (RAs) in various languages and fields abound; however, only scant attention has been directed toward abstracts written in Persian, and in the field of literature. Moreover, claims made by Lores (2004) regarding the correspondence of two types of abstracts with different models, and by Martin (2...

INTRODUCTION Auditory temporal resolution and auditory temporal ordering are two major components of the auditory temporal processing abilities that contribute to speech perception and language development. Auditory temporal resolution and auditory temporal ordering can be evaluated by gap-in-noise (GIN) and pitch-pattern-sequence (PPS) tests, respectively. In this survey, the effect of bilingu...

STUDY DESIGN Observational study. PURPOSE To cross-culturally translate the Orebro Musculoskeletal Pain Screening Questionnaire (OMPQ) into Persian and then evaluate its psychometric properties (reliability, validity, ceiling, and flooring effects). OVERVIEW OF LITERATURE To the authors' knowledge, prior to this study there has been no validated instrument to screen the risk of chronicity i...

INTRODUCTION In the present era, thesauri as tools in indexing play an effective role in integrating retrieval preventing fragmentation as well as a multiplicity of terminologies and also in providing information content of documents. GOALS This study aimed to investigate the keywords of articles indexed in IranMedex in terms of origin, structure and indexing situation and their Compliance wi...