RR Cacciola, C Ferlito, GG Guarnaccia, S Salemi, R Giustolisi and E Cacciola (2001) “Elevated plasma thrombopoietin levels and thrombosis in essential thrombocythemia: a preliminary report”, Haematologica. Pavia, Italy, 86(6), pp. 661-662. doi: 10.3324/%x.