What is a Non-Invasive Ventilator: Price, how to use and should you buy one for your home

Now, there are two types of ventilators-- Non-Invasive Ventilator (NIV) and Invasive Mechanical Ventilator (IMV). Here are all details you need to know about Non-Invasive Ventilators and whether you should buy one or not.

via ©Times Of India