sareshtedari m 1 (md) , shahamat h 1 (md) , sadeghi t 2 * (msc)       1 department of pediatrics, school of medicine, qazvin university of medical sciences, qazvin, iran   2 department of pediatrics, school of nursing and midwifery, tehran university of medical sciences, tehran, iran     received: 22 jan 2011, accepted: 23 jun 2011       abstract     introduction: regarding the importance of me...

limited information exists on mortality rates and it’s causes on iranian broiler farms. in the present study, mortality rate, etiology and risk factors associated with mortality rate in broiler flocks, were evaluated.178 folders related to the mortality of broilers which were covered by the national insurance program for broilers in mashhad, from 21 march 2011 to 20 march 2012, were investigate...

Background:   Elevator-related accidents are uncommon, but can cause significant injury. However, little data exist on these types of accidents. To compile and analyze accident data involving elevators in an effort to eliminate or at least significantly reduce such accidents. Methods: In this retrospective study we investigated 1,819 cases of elevator-related accidents during a four-year period...