Cinzia Sala, Marina Ciullo, Carmela Lanzara, Teresa Nutile, Silvia Bione, Roberto Massacane, Pio d’Adamo, Paolo Gasparini, Daniela Toniolo, Clara Camaschella. Variation of hemoglobin levels in normal Italian populations from genetic isolates. Haematologica 2008;93(9):1372-1375; https://doi.org/10.3324/haematol.12915.