Clinical and demographic characterisation of the population with osteoporosis in two reference medical centres in Colombia Jose Fernando Molina; Carlos Enrique Toro; Humberto Reynales Londoño; Nubia Hernandez;

Role of homocysteine and vitamin B in bone metabolism Jemina Narváez; Genessis Maldonado; María Intriago; Jenny Cárdenas; Roberto Guerrero; José Luis Neyro; Carlos Ríos;