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Bhattacharya, Antoinette Alas, Elizabeth Allen, Nasir Umar, Adamu Umar Usman, Habila Felix, Ahmed Audu, Joanna RM Schellenberg, ja Tanya Marchant. "Monitoring Childbirth Care in Primary Health Facilities: A Validity Study in Gombe State, Northeastern Nigeria." J Glob Health 2019.

Bhattacharya, Antoinette Alas, et al. "Monitoring Childbirth Care in Primary Health Facilities: A Validity Study in Gombe State, Northeastern Nigeria." J Glob Health 2019.