Guillermo Chantada, President of the International Society of Paediatric Oncology (SIOP), shared a post on X:
āGreat paper from Oscar RamĆrez et al about the impact of COVID in delayed diagnosis of retinoblastoma in Colombia.
Congratulations!ā
Authors: Oscar Ramirez, Vivian Piedrahita, Santiago Bolivar, Karina Grillo, Adriana Linares, Carlos Pardo, Martha PiƱa, Amaranto Suarez, Carlos A Portilla, Jesus Ardila, Viviana Lotero, Luz A Urcuqui, Angela Trujillo, Patricia Montenegro, Luis E Bravo, Paula Aristizabal

Guillermo Chantada is the President of the International Society of Paediatric Oncology (SIOP) and the Head Outreach Program at the Hospital Sant Joan de DĆ©u. Chantada is the Scientific Director of the Fundacion Perez Scremini in Montevideo, Uruguay, and the Hospital Austral in Buenos Aires, Argentina. Additionally, he holds the position of an associated physician at the Servicio de OncologĆa at the Hospital Sant Joan de DĆ©u in Barcelona. His main research interests are in neuroblastoma, retinoblastoma, and pediatric lymphomas.