Investigating the Optimal Duration of the Sun Exposure for Adequate Cutaneous Synthesis of Vitamin D3 in Baghdad City: Depending on Fitzpatrick Skin Classification for Different Skin Types. Iraqi Journal of Science, [S. l.], v. 65, n. 1, p. 546–554, 2024. DOI: 10.24996/ijs.2024.65.1.42. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/8688.. Acesso em: 23 feb. 2025.