Sandals, W. C. D., Curtis, R. A., Cote, J. F., & Martin, S. W. (1980). The Effect of retained placenta and metritis complex on reproductive performance in dairy cattle: a case control study. The Bovine Practitioner, 1980(15), 8–12. https://doi.org/10.21423/bovine-vol1980no15p8-12