instruction:
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:
Question: In the oxaciclohexane-type conformer of sugar -D - (+) - glucopyranose: 
 Options:  <0> One of the OH- groups is axial, but the remaining substituents are equatorial. <1> The CH2OH group is axial but the remaining groups are equatorial. <2> All groups are axial. <3> All groups are equatorial. <4> The CH2OH group is equatorial but the remaining groups are axial.
answer:
chemistry


question:
Question: Indicate the correct answer regarding the forces that influence the filtration through the capillaries of the renal glomeruli (Glomerular Filtration) that takes place in the renal corpuscle: 
 Options:  <0> The hydrostatic pressure of the blood circulating in the glomerular capillaries favors filtration to the Bowman's capsule. <1> The colloid osmotic pressure due to the plasma proteins within the glomerular capillaries favors filtration towards the Bowman capsule. <2> The hydrostatic pressure of the liquid inside the Bowman's capsule favors filtration into Bowman's capsule. <3> The net gradient of the sum of these three pressures is 100 mm Hg in favor of filtration. <4> All the above are correct.
answer:
nursery


question:
Question: A study has been carried out to determine the risk of upper gastrointestinal bleeding (UGIB) associated with the use of different non-steroidal anti-inflammatory drugs (NSAIDs). For this purpose, 2,777 patients with UGIB and 5,532 patients matched with the previous ones were included by age and month of admission or consultation, in the same hospitals, but for reasons that had nothing to do with the use of NSAIDs. The comparative risk of suffering a UGIB associated with previous exposure to different NSAIDs was calculated. What kind of study is it? 
 Options:  <0> Cohort study. <1> Cases and controls study. <2> Transversal study. <3> Experimental study <4> Ecological study
answer:

medicine