M. Campbell, G. Piaggio, D. Elbourne, and D. Altman. BMJ (Clinical research ed.), (January 2012)6930<m:linebreak></m:linebreak>JID: 8900488; epublish;<m:linebreak></m:linebreak>Publicació; RCT; Dissenys de cluster.
C. Coupland, and C. DiGuiseppi. Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention, 16 (2):
132-6(April 2010)5737<m:linebreak></m:linebreak>JID: 9510056; ppublish;.
F. Dorey. Clinical orthopaedics and related research, 469 (2):
619-20(February 2011)6031<m:linebreak></m:linebreak>JID: 0075674; ppublish;<m:linebreak></m:linebreak>Sample size; Power.
T. Friede, and H. Schmidli. Statistics in medicine, 29 (10):
1145-56(May 2010)5506<m:linebreak></m:linebreak>JID: 8215016; aheadofprint;<m:linebreak></m:linebreak>Sample size; Count data.
Y. Guo, H. Logan, D. Glueck, and K. Muller. BMC medical research methodology, 13 (1):
100(January 2013)7412<m:linebreak></m:linebreak>JID: 100968545; 2013/04/04 received; 2013/07/31 accepted; 2013/07/31 aheadofprint; aheadofprint;<m:linebreak></m:linebreak>Sample size; Dades longitudinals.
W. Hopkins, S. Marshall, A. Batterham, and J. Hanin. Medicine and science in sports and exercise, 41 (1):
3-13(January 2009)5136<m:linebreak></m:linebreak>JID: 8005433; RF: 28; ppublish;.