John de Leeuw is a Mohs Expert at Mohs European Consulting and a Pathology Assistent/Histology technician at the Pathology lab of PATHAN in Rotterdam, The Netherlands. As Mohs technician, he is working by Bergman Clinics and responsible for the Mohs procedure and quality in this Clinic.
He is also an expert in freezing techniques for the frozen sections during the Mohs procedure. Through MohsEuropeanConsulting (started in January 2017) he gives laboratories and private clinics advice on how to start a mohs lab or efficiency/development advice for existing Mohs labs. He also helps with training on location to new and experienced Mohs analysts/lab technicians. As a LT board member of ESMS, his plans are to organize and develop an active workgroup with the goal of helping European Mohs analysts/lab technicians rise to a higher level.