1. Department of Clinical Sciences College of Veterinary Medicine North Carolina State University Raleigh NC USA
2. Department of Biostatistics and Medical Informatics School of Medicine and Public Health University of Wisconsin‐Madison Madison WI USA
3. Geostatistical Consulting Claremont Claremont CA USA
4. Gillings School of Public Health Department of Environmental Sciences and Engineering University of North Carolina at Chapel Hill Chapel Hill NC USA
5. Department of Surgical Sciences School of Veterinary Medicine, and Department of Ophthalmology and Visual Sciences School of Medicine and Public Health University of Wisconsin‐Madison Madison WI USA