Following publication of the articles [1, 2], it is noticed the below sentence needs to be added to the Acknowledgement section of the two articles:

The article processing charge for this publication has been funded by an unrestricted grant from Formlabs.

Following publication of the articles [3,4,5,6,7,8], it is noticed the below sentence needs to be added to the Acknowledgement section of these articles:

The article processing charge for this publication has been funded by an unrestricted grant from Materialise.

The original articles have been updated.