Assessing frailty amongst older people admitted to hospital in a low-income setting: a multicentre study in northern Tanzania oleh Sean L Davidson, Luke Emmence, Sara May Motraghi-Nobes, Emily Bickerstaff, George Rayers, Godrule Lyimo, Joseph Kilasara, Mary Chuwa, Fortunatus Kisheo, Elibariki Kisaruni, Sarah Urasa, Emma Mitchell, Catherine L Dotchin, Richard W Walker