Accuracy and repeatability of automated femorotibial cartilage segmentation using convolutional neural networks - data from the osteoarthritis initiative healthy reference cohort. Issue 1 (April 2020) - Wirth, W.; Kemnitz, J.; Baumartner, C.F.; Konukoglu, E.; Maschek, S.; Eckstein, F.; Chaudhari, A.