Voutilainen, Ari, Jyrki K. Virtanen, Sari Hantunen, Tarja Nurmi, Petra Kokko, and Tomi-Pekka Tuomainen. “Nonoptimal Follow-up Times Make It Difficult to Detect the Epidemiological Inverse Relationship Between 25-Hydroxyvitamin D and Lung Cancer”. Biostatistics Research 1, no. 1 (September 6, 2021): 1–10. Accessed December 23, 2024. https://ojs.wiserpub.com/index.php/BSR/article/view/985.