Task: Text Categorization
Input (English): Question: In choosing the type of cardiac valvular prosthesis (biological or mechanical) to be implanted in a patient, various aspects and characteristics of the patient and the prosthesis must be considered. In view of the aforementioned, point out the INCORRECT statement: 
 Options:  <0> Permanent anticoagulation is necessary in mechanical prostheses. <1> In general, biological prostheses are indicated in young patients, with long life expectancy. <2> Biological prostheses would be indicated in cases that present a formal contraindication for anticoagulation. <3> The rate of structural deterioration of a biological prosthesis is inversely proportional to the age of the subject. <4> Biological prostheses do not require permanent anticoagulation.
Output (English): medicine