Dr. Antonio Eduardo Zerati received his medical degree from the University of São Paulo Medical School in 1996. He completed his residency in Vascular Surgery at the Hospital das Clínicas of the University of São Paulo Medical School in 2001 and received his PhD in medicine (Clinical Surgery) from the University of São Paulo in 2011. He is currently head of the Vascular and Endovascular Team at the São Paulo State Cancer Institute (Instituto do Câncer do Estado de São Paulo - ICESP), Hospital das Clínicas of the University of São Paulo Medical School and a Professor at the University of São Paulo Medical School. Dr. Zerati is also a researcher with more than 50 published papers on vascular and endovascular surgery, many of which related to cancer. He is a member of the Brazilian Society of Angiology and Vascular Surgery and the Society of Vascular Surgery (USA). Dr. Kenji Nishinari received his medical degree from the University of São Paulo Medical School in 1992. He completed his residency in vascular surgery at the Hospital das Clínicas of the University of São Paulo Medical School in 1996, and received his PhD in Vascular Surgery from the University of São Paulo Medical School in 2006. He is currently a Professor at the Department of Vascular and Endovascular Surgery at the AC Camargo Cancer Center and an Assistant Professor at the Hospital Alemão Oswaldo Cruz, São Paulo. He is a member of the Brazilian Society of Angiology and Vascular Surgery. Dr. Nelson Wolosker received his medical degree from the Santa Casa of São Paulo Medical Science College in 1984. He completed his residency in vascular surgery at the Hospital das Clínicas of the University of São Paulo Medical School in 1986, and received his PhD in medicine (Clinical Surgery) from the University of São Paulo in 1997. He is currently Vice President of Research and Innovation at the Hospital Israelita Albert Einstein. He is a Full Professor at the Hospital Israelita Albert Einstein Medical School and an Associate Professor at the University of São Paulo Medical School. Dr. Wolosker is also a researcher with more than 300 published papers on vascular and endovascular surgery, intermittent claudication and hyperhidrosis.