Unpacking the null: a post-hoc analysis of a cluster-randomised controlled trial of the WHO Safe Childbirth Checklist in Uttar Pradesh, India (BetterBirth) oleh Megan Marx Delaney, MSN, Kate A Miller, PhD, Lauren Bobanski, MPH, Shambhavi Singh, MPH, Vishwajeet Kumar, MD, Ami Karlage, BA, Danielle E Tuller, MHS, Atul A Gawande, ProfMD, Katherine E A Semrau, PhD