Authors: P Berntsen; C Y Park; B Rothen-Rutishauser; A Tsuda; T M Sager; R M Molina; T C Donaghey; A M Alencar; D I Kasahara; T Ericsson; E J Millet; J Swenson; D J Tschumperlin; J P Butler; J D Brain; J J Fredberg; P Gehr; E H Zhou Journal: J R Soc Interface Date: 2010-03-31 Impact factor: 4.118