نتایج جستجو برای: history of change

تعداد نتایج: 21226183  

Journal: :hepatitis monthly 0
shahnaz sali infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran; infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran. tel: +98-9123067784, fax: +98-2122546026 seyed moayed alavian baqiyatallah research center for gastroenterology and liver disease, tehran, ir iran graham r foster queen mary, university of london, the liver unit, london, uk hossein keyvani department of virology, tehran university of medical science, tehran, ir iran leila mehrnoosh baqiyatallah research center for gastroenterology and liver disease, tehran, ir iran navid mohammadi department of community medicine, faculty of medicine, tehran university of medical sciences, tehran, ir iran

background hepatitis b virus (hbv) is one of the most common chronic viral infections in the world. iran has a low to intermediate hbv prevalence and approximately 1.5 million people are living with hbv infection. the impact of hbv in iran is unknown and given the very low levels of alcohol consumption, this region provides an opportunity to examine the impact of isolated chronic hbv infection....

2015
Emma Shubin

Montane and Long-tailed voles (Microtus montanus and Microtus longicaudus) are notoriously difficult to distinguish through external characteristics and measurements in the field, particularly among juveniles. Being able to accurate identify these species is important, due to their central role in ecosystems (as keystone species) and as indicator species of climate change (due to their high sen...

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