Pregnant maternal brain dorsal anterior cingulate cortex choline/creatine ratios on 1H-MR spectroscopy in opioid exposure - Class, Jonathan A.; Vishnubhotla, Ramana V.; Zhao, Yi; Ooms, Nathan; Haas, David M.; Sadhasivam, Senthilkumar; Radhakrishnan, Rupa (Frontiers in Neuroscience, 2025)