Measurement of Salivary Cortisol for Revealing Age-Specific Dependence of Cortisol Levels on Time, Feeding, and Oxygen Metabolism in Newborn Infants. - Suzuki, Tomoko; Iwata, Sachiko; Hanai, Chinami; Fukaya, Satoko; Watanabe, Yuka; Nakane, Shigeharu; Okamura, Hisayoshi; Saitoh, Shinji; Iwata, Osuke (Biosensors (2079-6374), 2025)