J L van Saase, W M Noteboom, J P Vandenbroucke
van Saase J L, Noteboom W M, Vandenbroucke J P.
Longevity of men capable of prolonged vigorous physical exercise: a 32 year follow up of 2259 participants in the Dutch eleven cities ice skating tour.
British Medical Journal 1990; 301 :1409
doi:10.1136/bmj.301.6766.1409