Prognostic value of a combined estrogen receptor, progesterone receptor, Ki-67, and human epidermal growth factor receptor 2 immunohistochemical score and comparison with the genomic health recurrence score in early breast cancer

- Cuzick, Jack; Dowsett, Mitch; Howell, Anthony; Buzdar, Aman U.; Forbes, John F.; Pineda, Silvia; Wale, Christopher; Salter, Janine; Quinn, Emma; Zabaglo, Lila; Mallon, Elizabeth; Green, Andrew R.; Ellis, Ian O.