Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

Input: Consider Input: Abstract: A method is described for obtaining nondistorted, reproducible phosphoglucomutase-1 subtyping patterns from semen stains and bloodstains. Isoelectric focusing of phosphoglucomutase-1 was accomplished in 80 min in a 0.2-mm-thick polyacrylamide gel with an interelectrode wick distance of 8.0 cm. The gel contained 1.2% (w/v) N-(2-hydroxyethyl) piperazine-N-3-propanesulfonic acid (EPPS) and pH 5 to 7 ampholytes (4% w/v). When maintained at room temperature, laboratory-prepared bloodstains and semen stains could be typed for phosphoglucomutase-1 up to four months and three weeks, respectively. An evaluation of phosphoglucomutase-1 typing by isoelectric focusing and the Group I system was performed on casework samples submitted to the FBI Laboratory. In addition to the increased discriminating probability of phosphoglucomutase-1 when subtyped, isoelectric focusing yielded an increase in positive calls on questioned bloodstains (65.6 versus 36.2%) and dried seminal stains (16.4 versus 13.1%) compared with the Group I system.

Output: Subtyping phosphoglucomutase-1 in semen stains and bloodstains: a report on the method.

Input: Consider Input: Abstract: To assess the best method of quantitating progression of coronary disease, we studied four measurements in 114 coronary segments from 35 medically treated patients from whom angiograms were obtained 5 years apart. Only stenoses of less than 70% that were visualized in nearly identical projections on both angiograms were evaluated. Vessel edges were measured by use of catheter calibration and an automated computer algorithm yielding two "absolute dimensions" (mean and minimum diameters) and two measurements (percent stenosis and atheroma area) that required a "normal reference" diameter. The coefficient of variation for repeated segment measurements was less for mean and minimum diameter than for percent stenosis and area of atheroma. The best measure of progression of coronary disease as determined by t test comparison of different methods was the change in mean diameter over time (6.7 +/- 14.1% decrease), whether calculated on a per coronary segment or per patient basis (p less than .001). Based on this measurement and its standard deviation of progression of coronary disease in this patient subset with relatively benign disease, it is estimated that 470 patients per group would be required for an interventional study to demonstrate a 33% reduction in disease progression (207 patients for 50% reduction) at a 95% confidence level and 90% power.

Output: Optimal detection of the progression of coronary artery disease: comparison of methods suitable for risk factor intervention trials.

Input: Consider Input: Abstract: Postoperative renal function was evaluated in 90 patients operated on for abdominal aortic aneurysms. Forty-four patients were operated on acutely because of impending or actual rupture of the aneurysm. Forty-six patients were operated on electively. The overall mortality rate was 23.7% with a post-operative mortality of 7.8%. Postoperative renal function was evaluated by measurements of the s-creatinine. Impaired renal function was found postoperatively in 45% of the surviving patients. Forty percent of the patients operated on electively had postoperative renal impairment compared with 52% of the patients operated on acutely. The postoperative mortality rate in patients with impaired renal function was 32.4% compared with 8.7% in patients with unchanged renal function. No significant relation between postoperative renal impairment and administration of aminoglycosides, duration of the operation or clamping time of the aorta was found. We found a significant relationship between postoperative renal impairment and episodes of hypotension (p less than 0.01) and the volume of blood transfusions needed (p less than 0.001).
Output: Renal function following aneurysmectomy of the abdominal aorta.