Turner syndrome is a well-known cause of propotionate short stature in girls, but its frequency among these patients must vary in different populations. In Brazil, the cytogenetic study of 38 short girls without psychoneuromotor retardation, and without taking into account the presence or absence of dysmorphic signs, revealed that at least 1:8 had Turner syndrome. This is an unexpectedly high frequency in a population which is largely subject to adverse environmental conditions leading to growth deficiency.
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
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SRJ is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and qualitative measure of the journal's impact.
See moreSNIP measures contextual citation impact by wighting citations based on the total number of citations in a subject field.
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