Oral Dydrogesterone versus oral micronized progesterone in threatened miscarriage: protocol paper for a randomized controlled trial

Alka Kirplani, Gouri Shankar Kaniliya, T Ramani Devi, Ashima Taneja, Amol Pawar, Gayathri Karthik Nagesh, Tapan Pattanaik, Tanusree Gupta, Mahima Jain and Monjvi Mitra