How to find a pre-trained model that is published publicly?

It might be a little weird question but I am a newbie to ML/DL. I am building a DL model that will classify X-ray images with pneumonia. I’ve read this paper (PDF) MedNet: Pre-trained Convolutional Neural Network Model for the Medical Imaging Tasks ( which introduces MedNet model. My question is, how can I access this model and use it for my project?