Clean, safe water and improved sanitation have contributed to which of the follow?
a. the control of infectious disease.
b. better government social control.
c. better studies of the population's drinking habits.
d. cancer-causing microorganisms.

answer;

no:

a diagnostic thoracoscopy is always included in the surgical vats

explanation;

vats means video assisted thoracic surgery.

thoracoscopy is an endoscopical procedure completed on the lungs to visualize pleura, lungs and mediastinum using an endoscope

one thing to note is that a surgical thoracoscopy always includes a diagnostic thoracoscopy.

the diagnostic thoracoscopy codes are differentiated by the site and type of procedure performed.

c) it can produce three-dimensional images.