A significant association of office diastolic blood pressure with low-level blood lead exposure was reported in a Brazilian adult population. However, caution should be taken to interpret these results. The multivariable-adjusted association with blood pressure was positive for diastolic blood pressure, but inverse for systolic blood pressure. The association sizes were infinitesimal without cl...

With this letter we express our concerns about the applicability of the proposed Margin of Exposure analysis as a method of risk assessment for propylene glycol and glycerol exposure from a shisha-pen type electronic cigarette. The studies used to determine the Margin of Exposure were evaluating the effects in humans or animals of continuous exposure to these chemicals in every single breath, w...

It is widely agreed that learning to read starts with the establishment of letter-to-phoneme correspondences. However, it is also widely agreed that prereaders do not have access to phoneme units. Here we show that the building of associations between letters and syllables, which we call the 'syllabic bridge', might be a faster and more direct way of learning spelling-to-sound correspondences i...

Grundy and colleagues (1) conducted a study into how light influencesmelatonin in nurses during rotating shifts. Inter alia, it was concluded that the examined "two-12hour-days/two-12-hour-nights/5-days-off" pattern minimally disrupts melatonin production. Interestingly, chronotype information was obtained but appeared to have negligible effects on shift-work–melatonin relationships. The author...

background: letters to the editor provide an opportunity for readers to state their views about published articles. research on this issue has been mainly on western journals and there is no study on the iranian journals. the present study aimed to investigate this subject in iranian biomedical journals. materials and method: this was a bibliometric study. the databases of iran medex, medlib, a...

The deployment of the 5th-generation cellular networks (5G) and beyond has triggered health concerns due to electric magnetic fields (EMF) exposure. In this letter, we propose a novel architecture minimize population exposure EMF by considering smart radio environment with reconfigurable intelligent surface (RIS). Then, optimize RIS phases in terms index (EI) while maintaining minimum target qu...

s Abstracts of posters presented at ‘Northern Exposure’ annual scientific meeting of the British Branch of the International League against Epilepsy, Edinburgh, March 30th–April 1st, 2000 356 Correspondence Letter to the Editor R. Dasheiff 372

bactrian was the language of bactria in northern afganistan. this language is considered as one of the eastern middle iranian languages which was used from the first to the ninth century. the remaining materials from this language include coins, seals, inscriptions and documents. in 1990s, many bactrian documents were found amongst which the letters were of most importance as they gave much mor...