Retraction: Tracheal Bronchus: A Rare Etiology of Recurrent Pneumonia in Children.

[This retracts the article DOI: 10.7759/cureus.20378.

Obesity Concerns and the Future of a Nation's Health: A Cross-Sectional Study of Physical Activity and Related Awareness of Doctors-in-The-Making, Staff, and Faculty in a Saudi Arabian Medical College.

Background: Saudi Arabian population has amongst the highest prevalence of obesity globally. Apart from nutritional measures, physical activity is considered a major modifiable risk factor for the prevention of obesity and its consequences. An insight into the physical activity and awareness parameters of healthcare professionals and those in the making can provide an insight into how prepared we are to deal with the epidemic of non-communicable diseases.

Effect of Uncomplicated Diabetes Mellitus on Acute Respiratory Distress Syndrome Among COVID-19 Patients in Aseer Region, Saudi Arabia.

Background: Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; an ssRNA virus), which mainly affects the respiratory system but can also cause damage to other body systems. Acute respiratory distress syndrome (ARDS) is a serious complication of COVID-19 that requires early recognition and comprehensive management. ARDS is a diffuse inflammatory process that causes diffuse alveolar damage in the lung.

Tracheal Bronchus: A Rare Etiology of Recurrent Pneumonia in Children.

Recurrent infections are a common cause for seeking medical care and they result in significant parental anxiety and concerns. Although immunodeficiency disorders are an important underlying cause of recurrent infections, the majority of children with recurrent infections do not have any dysfunction in their immune systems. We present the case of an 11-year-old boy who was brought to the outpatient department by his parents because of a complaint of productive cough for the last one week that was associated with low-grade fever.

Ultrastructure Organization of Collagen Fibrils and Proteoglycans of Stingray and Shark Corneal Stroma.

We report here the ultrastructural organization of collagen fibrils (CF) and proteoglycans (PGs) of the corneal stroma of both the stingray and the shark. Three corneas from three stingrays and three corneas from three sharks were processed for electron microscopy. Tissues were embedded in TAAB 031 resin.