English En
  • Deutsche De
  • English En
  • Français Fr
  • Русский Ru

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our marketing and analytics partners who may combine it with other information you've provided to them or which they've separately collected from you. You also may to see our Privacy Policy. By clicking the OK button below, you accept our cookies.

Authors:

Variability is the law of life, and as no two faces are the same, so no two bodies are alike, and no two individuals react alike and behave alike under the abnormal conditions which we know as disease.

William Osler