Selection of Spermatozoa with Normal Nuclei to Improve the Pregnancy Rate with Intracytoplasmic Sperm Injection

Abstract excerpt

To the Editor: Accurate identification of phenotype is critical for precise genetic characterization. Standard textbooks define the Wolff-Parkinson-White syndrome as the combination of a short PR interval, an increased duration of the QRS complex caused by an initial slow deflection (delta wave), and supraventricular tachyarrhythmias. 1,2 The phenotype identified by Gollob et al. (June 14 issue) 3 is based on "a...

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