John E. Marshall Marshall, J. E., Moorman, V. J., & Moll, H. D. (2007). Comparison of the diagnosis and management of unilaterally castrated and cryptorchid horses at a referral hospital: 60 cases (2002-2006). JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION, 231(6), 931–934. https://doi.org/10.2460/javma.231.6.931