Developing Clinical Artificial Intelligence for Obstetric Ultrasound to Improve Access in Underserved Regions: Protocol for a Computer-Assisted Low-Cost Point-of-Care UltraSound (CALOPUS) Study - Alice Self; Qingchao Chen; Bapu Koundinya Desiraju; Sumeet Dhariwal; Alexander D Gleed; Divyanshu Mishra; Ramachandran Thiruvengadam; Varun Chandramohan; Rachel Craik; Elizabeth Wilden; Ashok Khurana; Shinjini Bhatnagar; et al. (JMIR Research Protocols, 2022)