TY - GEN AU - Martín Fernández,J AU - Martínez Marcos,M AU - Cantero García,P TI - [The number of patients that it will be necessary to treat: a tool of interest for the clinician] SN - 0025-7753 PY - 1999///0922 KW - Clinical Trials as Topic KW - methods KW - Humans KW - Odds Ratio KW - Patient Selection KW - Risk N1 - Publication Type: Letter ER -