Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) RAMALHO AC,Osteoporotic fractures of proximal femur : clinical and epidemiological features in a population of the city of Sao Paulo,Sao Paulo Med J,,,2001,119,,48-53,https://cir.nii.ac.jp/crid/1573387448950089344,https://doi.org/10.1590/s1516-31802001000200002