Oestrus control in the bitch with medroxyprogesterone acetate (MPA) and incidence of mammary tumours

chien ciclo estral cycle oestral disease surveys dogs encuestas sanitarias females femelle glande mammaire hembra maladie des glandes mammaires mammary gland diseases mammary glands morbidite morbidity morbosidad neoplasmas neoplasme neoplasms oestrous cycle perro progestagenos progestational hormones