**Preface to "Respiratory and Critical Care"**

The COVID-19 pandemic has affected health care across the world, with respiratory and critical care medicine being affected the most. The response of clinicians and researchers who have provided care and research not only for patients with COVID-19, but in all areas of respiratory and critical care medicine in extraordinary circumstances, has been impressive. In this Special Issue of the *Journal of Personalized Medicine*, we invited scholars to contribute manuscripts that highlight and further the knowledge in the abovementioned challenging disciplines.

The target readership encompasses respiratory and critical care physicians, rehabilitation practitioners, nurses, and technicians, in addition to all respiratory and critical care fellows and aims to provide important scientific information across all areas of respiratory research including COVID-19, COPD, asthma, pulmonary embolism, pneumonia, sleep medicine and respiratory critical care.

This reprint is the product of a collaborative effort by a dedicated team of physicians from the University of Thessaly whose specialties span the entire field of respiratory and critical care, along with contributions from around the world.

Many thanks to Professor Konstantinos Gourgoulianis for his support, encouragement and inspiration.

> **Ioannis Pantazopoulos and Ourania S. Kotsiou** *Editors*
