Children with cancer in the time of COVID‐19: An 8‐week report from the six pediatric onco‐hematology centers in Lombardia, Italy. Issue 8 (26th May 2020) - Ferrari, Andrea; Zecca, Marco; Rizzari, Carmelo; Porta, Fulvio; Provenzi, Massimo; Marinoni, Maddalena; Schumacher, Richard Fabian; Luksch, Roberto; Terenziani, Monica; Casanova, Michela; Spreafico, Filippo; Chiaravalli, Stefano; et al.