title: Effect of initial collagen concentration on fibroblast mediated contraction of collagen gels
authors.affiliation: Pulmonary and Critical Care Medicine Section, University of Nebraska Medical Center, Omaha, NE.
authors.initials: YK
authors.lastname: Zhu
authors.initials: T
authors.lastname: Umino
authors.initials: XD
authors.lastname: Liu
authors.initials: HJ
authors.lastname: Wang
authors.initials: DJ
authors.lastname: Romberger
authors.initials: JR
authors.lastname: Spurzem
authors.initials: SI
authors.lastname: Rennard