Exhaled Breath Sampling Suitable for Hormonal Assessments?

Reckendorf, A., Schmicke, M., Bunskoek, P., Anderson Hansen, K., Thybo, M., Strube, C., & Siebert, U. (2021). Is Harbor Porpoise (Phocoena phocoena) Exhaled Breath Sampling Suitable for Hormonal Assessments?. Animals, 11(3), 907.