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Rudolph, Jürn; Bruckmaier, Rupert; Kasimanickam, Ramanathan; Steiner, Adrian; Kirchhofer, Marc Peter; Hüsler, Jürg; Hirsbrunner, Gabriela (2011). Comparison of the effect of a CIDR-Select synch versus a long-term CIDR based AI protocol on reproductive performance in multiparous dairy cows in Swiss dairy farms. Reproductive biology and endocrinology, 9(1), p. 151. London: BioMed Central 10.1186/1477-7827-9-151