Wauters, J., Wilson, K. S., Bouts, T., Valentine, I., Vanderschueren, K., Ververs, C., Howie, A. F., Rae, M. T., Van Soom, A., Li, R., Li, D., Zhang, H., & Vanhaecke, L. (2018). Urinary specific gravity as an alternative for the normalisation of endocrine metabolite concentrations in giant panda (Ailuropoda melanoleuca) reproductive monitoring. PLOS ONE, 13(7), Article e0201420. https://doi.org/10.1371/journal.pone.0201420