R Caporali, C Perotti, P Pedrazzoli, GA Da Prada, S Bernuzzi and C Montecucco (2001) “Cyclophosphamide plus granulocyte colony stimulating factor (G-CSF) is more effective than G-CSF alone in mobilizing hemopoietic progenitor cells in severe, refractory rheumatoid arthritis”, Haematologica. Pavia, Italy, 86(1), pp. 106-107. doi: 10.3324/%x.