Oestrogen patches (OP) to treat prostate cancer (PC) – Are different commercial brands interchangeable?. Issue 1 (May 2015) - Langley, Ruth E.; Duong, Trinh; Godsland, Ian F.; Kynaston, Howard; Kockelbergh, Roger; Rosen, Stuart D.; Alhasso, Abdulla A.; Dearnaley, David P.; Clarke, Noel W.; Jovic, Gordana; Carpenter, Robin; Bara, Anna; et al.