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An investigation was undertaken to confirm the effect of oral contraceptives (OCs) and estrogenic hormones on the mean cell volume (MCV) in women over a wide age range, to determine the effect of smoking on the differential white cell count as well as to determine the relationship between the number of cigarettes smoked and the effects of smoking on the(More)
In an effort to meet the increasing demands for blood to cover routine surgery and in order to reduce the amount of time-expired blood, we have adopted a system of grouping and screening patients' blood preoperatively but not crossmatching blood unless there is more than a 30 per cent chance that it will be used. This approach is based on schemes developed(More)