data sharing
Chen X, Cho K, Singer BH & Zhang H 2009 Retraction. PNAS 106:17241.
Schekman R 2009 PNAS takes action regarding breach of NIH embargo policy on a PNAS paper. PNAS 106:16893.
Guttmacher AE, Nabel EG & Collins FS 2009 Why data-sharing policies matter. PNAS 106:16894.