[Periodic visiting to a veterinary clinic should be useful and effective].
D000818:Animals; D002417:Cattle; D003257:Consumer Product Safety; D003612:Dairying / Q000592:standards*; D005260:Female; D006801:Humans; D008892:Milk / Q000166:cytology / Q000592:standards; D009426:Netherlands; D011786:Quality Control; D014730:Veterinary Medicine / Q000592:standards*