Work of breathing during HHHFN and synchronised NIPPV following extubation Eur J Pediatr 2019;178:105-110, doi: 10.1007/s00431-018-3254-3. Response to: How can we provide true synchronization in synchronized NIPPV. Corresponding Author: Kadir Şerafettin Tekgündüz; doi: 10.1007/s00431-019-03353-4.