others http://www.nature.com/ng/journal/v33/n3s/full/ng1089.html http://www.nature.com/ng/journal/v33/n3s/full/ng1089.html http://www.nature.com/ng/journal/v33/n3s/full/ng1089.html http://www.nature.com/ng/journal/v33/n3s/full/ng1089.html http://www.nature.com/ng/journal/v33/n3 ... g1089.html