this study sought to compare the clinical features and outcome of a first acute myocardial infarction (ami) with onset of symptoms during or within 30 minutes of exercise, at rest and in bed. information collected using a standard questionnaire was used to relate activity at the onset of symptoms and in-hospital outcome in 500 consecutive patients admitted to our heart center with a first ami b...

AbstractBackground: Around the world, one of the main concerns and risky behaviors among youths ismethamphetamine consumption. Since the age of onset of methamphetamine use is decreasing, therefore, itis important to identify the effective factors on the age of onset of methamphetamine consumption. In the<sp...

The time interval between the first appearance of signs in the transmitting parent and the birth of the subsequently affected child has been shown by Brackenridge and Telscher (1975) to influence the age at onset of Huntington's disease. The cirticism by Burke (1976) that the interval factor offers no predictive advantage over parental onset age is refuted. The advantage of small sibship sizes ...

 Background: Multiple sclerosis (MS) is an inflammatory and demyelinating disease of central nervous system (CNS). The aim of the present study was to determine the type and the frequency of initial presenting symptoms in patients with MS and their relation with demographic characteristics in Babol, northern Iran. Methods: All patients of this study were recruited over a ten year period fr...