نتایج جستجو برای: etiologic factors
تعداد نتایج: 1083116 فیلتر نتایج به سال:
Vertebral osteophyte formation is a well-documented phenomenon that is associated with degeneration and altered mechanics of the spine, both of which have been considered to be the result of aging, a purely physiologic response to load bearing, or intrinsic spinal disease as etiologic factors. (Lane et al., 1993, O’Neill et al., 1999) They are recognized radiologically as hyperostosis at the re...
BACKGROUND Although several determinants of global developmental delay (GDD) have been recognized, a significant number of children remain without definitive etiologic diagnosis. The objective of this study was to assess the effect of various prenatal and perinatal factors on the severity and outcome of developmental delay without definitive etiologic yield. METHODS From March 2008 to Februar...
BACKGROUND Numerous epidemiological studies found an increased risk of schizophrenia among persons exposed to various obstetric complications. The underlying mechanisms are unknown. OBJECTIVE To study specific risk factors, as well as sets of risk factors, representing 3 different etiologic mechanisms: (1) malnutrition during fetal life; (2) extreme prematurity; and (3) hypoxia or ischemia. ...
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