Merel Kooning (47) from the Netherlands is a self-made millionaire and operates two dental practices among others. According to De Telegraaf, her turnover is around 1.5 to 2 million euros per year.
Merel Kooning (47) from the Netherlands is a self-made millionaire and operates two dental practices among others. According to De Telegraaf, her turnover is around 1.5 to 2 million euros per year.