Background: The fertility tourism is a term refers to the cross-border movements made by infertile patients in order to receive reproductive treatment through assisted reproductive technology. In recent years the number of countries involved in medical tourism has been increased. The aim of this study is to provide an overview of the research that has explored aspects of crossborder reproductiv...

Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is a technique for trace elemental analysis and isotopic distribution determination at trace levels, but ICPMS cannot handle directly high concentrations of ions. Dimethylglyoxime will selectively precipitate palladium from acid solutions leaving most of the impurities in solution and allowing their quantitation by ICP-MS without dilution. B...

Deardorff [Journal of International Economics 36 (1994) 167-175] offers an intuitively appealing test for factor price equality (FPE). He demonstrates that FPE is impossible if the set (i.e., lens) of points defined by regional factor abundance vectors does not lie within the set of points defined by goods’ input intensities. This note demonstrates that empirical implementation of the lens cond...

This paper proposes a nonparametric FPE-like procedure based on the smooth backfitting estimator when the additive structure is a priori known. This procedure can be expected to perform well because of its well-known finite sample performance of the smooth backfitting estimator. Consistency of our procedure is established under very general conditions, including heteroskedasticity.

The Sofia catheter is a new large-bore aspiration that allows easy access and good reperfusion. In this study, we analyzed the efficacy safety of in comparison with stent retrievers as contact thrombectomy (CAT) tool for large vessel occlusion. We enrolled patients acute ischemic stroke who underwent endovascular from April 2017 2020 our hospital. Patients were retrospectively reviewed divided ...

Assume that a symmetric encryption scheme has been deployed and used with a secret key. We later must change the encryption scheme in a way that preserves the ability to decrypt (a subset of) previously encrypted plaintexts. Frequent real-world examples are migrating from a token-based encryption system for credit-card numbers to a format-preserving encryption (FPE) scheme, or extending the mes...

OBJECTIVE To determine the prevalence of influenza vaccination in chronic obstructive pulmonary disease (COPD) patients, and the effectiveness of the procedure. METHODS Retrospective population-based cohort study. On 31 December 2011, influenza vaccination history was retrieved from 899 patients with confirmed COPD selected by simple random sampling from all COPD patients in Cantabria (northe...

This paper examines the issue of the effect of international trade on quality choice by firms in a factor-endowment framework. Factor price equalization implies product quality equalization. In the NorthSouth context it means that the South catches up with the North in product quality due to the competitive pressure from international trade, not because of technology adoption. Free trade may in...