Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Regarding the loss of bone mass in patients treated with glucocorticoids, what statement do you consider correct? 
 Options:  <1> If the dose of prednisone received by the patient is less than 15 mg per day, for a time less than 6 months, it is not a real problem and no preventive measure should be taken. <2> Thiazides have been shown to reduce the risk of fractures, both in the hip and in the spine, in patients treated with glucocorticoids. Therefore, its use should be recommended in these patients as a preventive measure. <3> It is recommended to perform a bone densitometry after the first year of treatment with glucocorticoids, since before there is no loss of bone mass. <4> All patients treated with glucocorticoids should receive an adequate supply of calcium and vitamin D, which can come from the diet or from pharmacological supplements. <5> The loss of bone mass is observed, especially in the hip, so the densitometry of the spine has no use in its assessment.
