In February 2023 the 1150th copy of the book is sold. That means that the book is still very popular because this is a big number for a textbook in such a small niche. It is also clear that the book is popular in many countries. In January we reached the number of 60 countries. 16 of those countries belong to the least developed and lower-middle-income countries. It is nice to realize that this book can make a difference for professionals in countries with limited possibilities We thank all the authors who did together a great job in contributing to this book.