The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

During embryonic development, the right ventricle is formed from the secondary heart field into a crescent-shaped, thin-walled structure. 6 It is the most anterior heart chamber, sitting just beneath ...

Focused cardiac ultrasonography is a practical, transthoracic, qualitative or semiquantitative means of assessing cardiac size, structure, and function that is performed and interpreted by the ...