Awais, Muhammad Hamid, Muhammad Aamir, Sobia Irum Kirmani, Hafiza Monaza Batool, Nisar Ahmed, and Sadiq Ali. “Method Development and Validation of Methylmalonic Acid by Liquid   Chromatography Mass Spectrometry”. Pakistan Armed Forces Medical Journal 75, no. SUPPL-5 (July 31, 2025): S812-S816. Accessed August 24, 2025. https://www.pafmj.org/PAFMJ/article/view/7623.