"News". British Medical Journal. 305 (6856). British Medical Journal Publishing Group: 731–736. 26 September 1992. doi:10.1136/bmj.305.6856.731. ISSN0959-8138. Retrieved 19 August 2024.
doi.org
"News". British Medical Journal. 305 (6856). British Medical Journal Publishing Group: 731–736. 26 September 1992. doi:10.1136/bmj.305.6856.731. ISSN0959-8138. Retrieved 19 August 2024.
"News". British Medical Journal. 305 (6856). British Medical Journal Publishing Group: 731–736. 26 September 1992. doi:10.1136/bmj.305.6856.731. ISSN0959-8138. Retrieved 19 August 2024.