Arthur put his official acute internal medicine (AIM) training in The Netherlands on hold in March 2019 and moved to Reading to do a yearlong AIM and POCUS fellowship at the Royal Berkshire Hospital. He quickly honed his skills and became an instructor at various basic and advanced ultrasound courses across Europe. He received the Royal College of Radiology level 1 certification in gastrointestinal, urological and vascular ultrasound. He also became the first (Dutch) internist (in training) certified in transthoracic echocardiography (TTE) by the European Society of Cardiology/European Association (ESC/EACVI) of Cardiovascular Imaging after completing an echocardiography placement at the St. Antonius Hospital in Nieuwegein. In addition, he is a member of the Ultrasound Taskforce of the Dutch Society of Internal Medicine (NIV), and helped redesign the NIV POCUS course. In June 2022 Arthur completed his training and started working as a consultant in acute internal medicine at the Maasstad Ziekenhuis in Rotterdam. He recently completed his PhD on the use of POCUS in the COVID-19 pandemic.