Spontaneous regression of hepatocellular carcinoma (HCC) represents a rare clinical event in which established tumours partially or completely disappear in the absence of specific anticancer therapy.

Isotonic and nonparametric regression techniques encompass a family of statistical methods that estimate relationships between variables without prespecifying a fixed functional form. Central to this ...

Age regression occurs when someone reverts to a younger state of mind. This retreat may be only a few years younger than the person’s physical age. It could also be much younger, into early childhood ...