Marsden Andrew K, Redmond Anthony, Pedoe Hugh Tunstall, Ward Michael, Zideman David, Steggles Brian, Camm John, Evans Tom, Fisher Judith, Harries Mark, Herbert Rodney
Br Med J (Clin Res Ed). 1985 Jun 29;290(6486):1985-6. doi: 10.1136/bmj.290.6486.1985.