Abstract Background To determine the global prevalence of rheumatoid arthritis (RA) based on published studies and reveal factors which influence RA estimates. Methods Four electronic databases- ProQuest Central, MEDLINE, Web Science, EMBASE were searched for publications from 1980 2019, reporting estimates RA. A random-effect meta-analysis model was used to produce pooled The potential sources...

  SUMMARY The purpose of this study was to assess the role of primary health services in improving general health of children in chat rood villages, Kerman, Iran, by comparing growth and nutritional status of 0-5 year children in 1980 and 1984. Nutritional status was assessed, using anthropometric methods; in 1980, 1981, 1982, and 1984. The results were as follows; 1)between 1980 and 1982, t...