Cross-cultural assessment of knowledge and attitudes toward Folic acid: Instrument development and validation in Thailand and Yemen - Rana Ali Al-Qaari; Saranthorn Khuankaew; Mahittha Suttiserm; Siraphat Pornsuksawang; Pawat Boonnop; Somchai Manopatanakul; Siribang-on Piboonniyom Khovidhunkit; Sasipa Thiradilok; Chanita Tantipoj (PLoS ONE, 2026)