In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: A patient with dyspepsia will undergo a screening test for Helicobacter pylori. Before carrying out the test, the patient should know that: 
 Options:  <0> Treatment with proton pump inhibitors should be discontinued at least one week before the test. <1> Treatment with proton pump inhibitors should be discontinued at least two weeks before the test. <2> The use of antacids also modifies the results of the test. <3> The use of antibiotics does not modify the diagnostic tests for H. pylori. <4> Antibiotic treatments negativize the diagnostic tests for H. pylori, so these drugs should be avoided for one week before any diagnostic test.
nursery