Exploring working conditions and job stability of midwives in Spain: results from a cross-sectional national survey. - Rodríguez-Blanco N; Sánchez-Más J; Ayuso-Murillo D; Fontán-Vinagre MG; Angulo-Perea M; Díaz-Gautier A; Guerrero-Menéndez R (BMC pregnancy and childbirth, 2026)