mangrove sediments were collected during wet and dry seasons from nine stations in khamir,laft and natural reservoir mangrove-dense areas of hormozgan province in the south of iran. σ pcbs ranged from 5.33 to 15.5 ng/g dry weight and the dominant congener was no.153. average σ ddts for khamir and laft mangroves were 16.58 ± 1.51 and 18.8 ± 9.98 ng/g dry weight. ddt was more abundant than dde an...

BACKGROUND Consumer involvement in clinical guidelines has long been advocated although there are few empirical accounts of attempts to do so. It is therefore not surprising that there is a lack of clarity about how and when to involve consumers and what to expect from them within the process of guideline development. METHODS The North of England evidence based guideline development programme...

BACKGROUND Patient and consumer engagement in clinical practice guideline development is internationally advocated, but limited research explores mechanisms for successful engagement. OBJECTIVE To investigate the perspectives of potential patient/consumer guideline representatives on topics pertaining to engagement including guideline development group composition and barriers to and facilita...

OBJECTIVE To determine whether North American guidelines published subsequent to and in the same topic areas as those developed by the US Agency for Health Care Policy and Research (AHCPR) meet the same methodological criteria. STUDY DESIGN A guideline appraisal instrument containing 30 criteria was used to evaluate the methodological quality of the AHCPR guidelines, "updates" of the AHCPR gu...