Behrooz Ghorbani

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Transurethral Ureterolithotripsy (TUL) is a frequently used procedure in urology departments. Many urologists perform TUL without antibiotic prophylaxis; however the use of chemoprophylaxis before TUL remains a controversial issue in urology. This study was carried out to assess the safety of omitting antibiotic prophylaxis prior to TUL. In a prospective(More)
We consider a linear regression y = Xβ + u where X ∈ Rn×p, p n, and β is s−sparse. Motivated by examples in financial and economic data, we consider the situation where X has highly correlated and clustered columns. To perform sparse recovery in this setting, we introduce the clustering removal algorithm (CRA), that seeks to decrease the correlation in X by(More)
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