Ovarian cancer relies on the PDGFRβ–fibronectin axis for tumorsphere formation and metastatic spread oleh Núria Gendrau‐Sanclemente, Agnès Figueras, Kristina Gracova, Álvaro Lahiguera, Elisenda Alsina‐Sanchís, Juan A. Marín‐Jiménez, August Vidal, Xavier Matias‐Guiu, Sergi Fernandez‐Gonzalez, Marc Barahona, Lola Martí, Jordi Ponce, Francesc Viñals