TECHNICAL INNOVATION Three-dimensional Hysterosalpingo Contrast Sonography with Lignosal as Contrast for Evaluation of Tubal Patency in the Infertile Women – An Observational Cohort Study Chegondi V N Rao, Chegondi Sindhu, Murali Krishna Kota Am J Sonogr 2 (4) (17th April, 2019) DOI:10.25259/AJS-46-2018 Full text | PDF