Important message

Visitors of my website might have noticed that since April 2019 there haven't been any updates anymore.
I'm sorry to say that this has to do with what might be called a medical condition.
In fact, as of the end of April 2019, I have developed a severe form of Tinnitus after having followed an offshore course, including a training in a swimming pool.
The ringing in my ears, which is quite troublesome, makes it impossible for me to concentrate enough to work on my website as I did so enthousiastically before.
I hope everybody can understand.
I also want to apologise for not having made a fancy 'season's greeting' card as I used to do, so I wish everybody the best for 2020 in this way.
I really hope that my condition will turn better someday.

Bert Visser