Indraccolo, Ugo. “Application of a Naegele’s Formula Adapted to the Long Count Mayan Calendar to Calculate the Expected Date of Birth During a Leap Year”. History of Medicine 12, no. 2 (October 12, 2026): 1–14. Accessed October 12, 2026. https://historymedjournal.com/index.php/medicine/article/view/1408.