1. Surgeons reach peak performance between 35 and 50;Daily Mail Reporter,2012
2. Influence of experience on performance of individual surgeons in thyroid surgery: prospective cross sectional multicentre study;Duclus;BMJ,2012
3. Hugh Young: a surgeon’s autobiography;Young,1940
4. Significance of increased phosphatase activity of bone at the site of osteoblastic metastases secondary to carcinoma of the prostate gland;Gutman;Am J Cancer,1936
5. An ‘acid’ phosphatase occurring in the serum of patients with metastasizing carcinoma of the prostate gland;Gutman;J Clin Invest,1938