Health system readiness for immediate Kangaroo Mother Care (iKMC) among network of care facilities in the Sidama region, Ethiopia: a mixed-method study - Abiy Seifu Estifanos; Hailemariam Negash; Setisemhal Getachew; Dorka Woldesenbet Keraga; Akalewold Alemayehu; Mekdes Shifeta Argaw; Meles Solomon; Fitsum Woldegabriel Belay; Siren Rettedal; Sachiyo Yoshida; Anayda Portela (Gates Open Research, 2026)