In this paper, we prove an existence theory for ring-profiled optical vortex solitons via constrained minimization, which are considered in the context of an el
Background: The diagnosis of tuberculosis (TB) is frequently challenging given that the clinical and radiographic features of TB are often nonspecific. Altered
Aim: The aim of this study is to describe the clinical characteristics of patients with a diagnosis of systemic sclerosis who later suffer a stroke and to ident