Orthogonal polynomials on the unit circle are completely determined by their reflection coefficients through the Szegő recurrences. We assume that the reflection coefficients converge to some complex number a with 0 < |a| < 1. The polynomials then live essentially on the arc { e : α ≤ θ ≤ 2π−α } where cos α 2 def = √ 1− |a|2 with α ∈ (0, π). We analyze the orthogonal polynomials by comparing th...

BACKGROUND AND AIM High heart rate is an independent predictor of total cancer incidence and all-cause mortality in patients with cancer. We aimed to evaluate the impact of resting heart rate on the recurrence of colorectal polyp, using long-term surveillance follow-up data of colorectal cancer survivors. METHODS Three hundred patients were selected from the colorectal cancer survivor cohort ...

Objective: The aim was to assess the efficacy of post-operative adjuvant treatment with goserelin acetate for reducing the recurrence of pelvic symptoms and total recurrence rates in Chinese patients with moderate to severe endometriosis. Methods: This largest non-interventional, observational study enrolled 426 Chinese patients with moderate to severe endometriosis across 15 centers in China. ...

Background: A decreased rate of successful helicobacter pylori (H.pylori) infection treatment has revealed serious demand for more effective regimens to eradicate infection. Therefore, probiotics have recently been considered to increase the rate of antibiotic regimens efficacy in H. pylori infections. In current randomized controlled trial, we evaluated the effect of double strain probiotic co...

OBJECTIVE To systematically evaluate 5-year survival, local recurrence rate, long-term recurrence rate and complications for lobectomy and segmentectomy in the treatment of NSCLC. METHODS Articles on randomized and non-randomized clinical studies of 5-year survival, local recurrence, long-term recurrence and complications after lobectomy and segmentectomy for treatment of NSCLC. RESULTS Amo...

OBJECTIVES/HYPOTHESIS To review the literature on neck recurrence in esthesioneuroblastoma. STUDY DESIGN PubMed database. METHODS A PubMed database search was performed using keywords "esthesioneuroblastoma," "olfactory neuroblastoma," and "esthesioneuroblastoma neck metastasis." Articles written in English with greater than 10 subjects that had data regarding the association of neck recurr...

Background: Some recent studies have shown that troponin may have a Prognostic value in patients with ischemic stroke. This study seeks to to evaluate the prognostic value of troponin on 3 months mortality and recurrence in patients with ischemic stroke. Method: In this study 63 patients with ischemic stroke were evaluated. Embolic and lacunar stroke were excl...

Background & Aims: Osteosarcoma is one of the most prevalent malignant bone tumors . This study is designed to assess the prognostic effect of pathologic fracture and treatment options on survival of patients with osteosarcoma. Materials & Methods: In this study, prognosis of 106 patients with limb osteosarcoma, which were treated at three&nbsp; hospitals in Tehran from April to August 2012 ...