S.K. Rabindrakumar, S. Jayasena, P. Wickramasinghe, V. Karunaratne and T.Thoradeniya. A 19-base pair deletion polymorphism in dihydrofolate reductase is associated with decreased 5-formyltetrahydrofolate in pregnant Sri Lankan women following folic acid supplementation. Micronutrient Forum 5^th Global Conference 2020. March 23rd – 27th, 2020, Bangkok, Thailand. (Accepted for virtual poster presentation November 2020 due to Covid-19 pandemic)