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Resting cortisol (nmol/L) concentration at sea level baseline (n = 8) and on expedition, collected the morning of the day after arrival at Dhaulagiri lower base camp (4600 m) on day 10 (n = 8) and at Hidden valley (5140 m) on day 12 (n = 8) (* = significantly (p < 0.05) different to previous altitude).
