Letter to the Editor: Frailty and Cognition: Not as Straightforward as It Might Appear.
M.U. Pérez-Zepeda, Periférico Sur 2767, colonia San Jerónimo Lídice, delegación Magdalena Contreras, C.P. 10200, México Distrito Federal, Mexico.
M U
MU
Pérez-Zepeda
V E
VE
Arango-Lopera
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C
García-Peña