PATHAK R, PRASAD S, KUMARESAN A, et al. Association of peripartum progesterone, estradiol, cortisol, PGFM and relaxin concentrations with retention of fetal membranes in crossbred dairy cows. Indian J of Anim Sci. 2020;90(7):993-997. doi:10.56093/ijans.v90i7.106668