Background Congenital hypothyroidism (CH) is one of the most common causes of mental disability, which can be prevented in the case of early diagnosis and treatment. We aimed to study the some relevant risk factors for CH in neonates born in Khorasan Razavi Province, Iran. Materials and Methods: This was a population-based case-control study conducted on 97,380 neonates.The study population c...

In this work, nonlinear diabetes controlled model with and without complications in a population is considered. The dynamic behavior of by including constant control studied investigated. existence all its possible fixed points investigated as well the conditions local stability considered are set. We also find optimal strategy order to reduce number people having over finite period time. A num...