Nalinbenjapun, Sirinporn, and Chitchamai Ovatlarnporn. “P-Aminobenzoic Acid-Chitosan Conjugates for PABA Delivery to the Large Intestine”. Pakistan Journal of Nutrition 15, no. 10 (September 15, 2016): 921–928. Accessed January 20, 2026. https://pjnonline.org/pjn/article/view/2404.