First the trachea itself divides in two in the uppermost part
of the chest, then the two main bronchi continue dividing dichotomously — no fewer than 23 times on each
side,» explains Håkon Olav Leira, a physician who has recently taken his
doctorate degree on image - guided bronchoscopy.
Not only are members more on the affluent
side of the spectrum, but over 80 % have a bachelor's, master's, or
doctorate degree.