Information on center characteristics as costs' determinants in multicenter clinical trials: is modeling center effect worth the effort?
Autori:
Petrinco M, Pagano E, Desideri A, Bigi R, Ghidina M, Ferrando A, Cortigiani L, Merletti F, Gregori D.
Rivista:
Value Health 2009; 12: 325-30.