Email contact lists for Dentists and Dental Hygienists

Hello, I need a contact list with the First&Last Name, Address and Email of Dentists (and Dental Hygienists) in Australia, UK and US. I will need the list broken up into the 3 different countries. The list must be provided in Excel format with the headings mentioned above (name, address, email, country) I am expecting thousands of contacts as I am aware these lists are readily available online and have been previously requested on Freelancer at low prices. I expect this to be a simple and low cost project. Data must be provided to confirm validity before payment is made. Please note, this is a condition of the project, thank you for understanding. If you have done a similar project previously, please provide samples. Previous experience is also good. Looking forward to starting this project soon. All questions welcome Thank you