Dr. Koller has been practicing medicine in Heidelberg since April 1984.
He is married to Hettie Koller who is a housewife.
They have three children Angelique (who is married to Dr.Bob's associate
Dr. Siewert Alkema), John and Corne.
Dr. Bob has a farm near Frankfort and has been a part time 'boer' for many years.
He plants corn and raises cattle next to the Vaal river in his spare time.
Apart from his 29 years experience in medicine he also has a general BSc degree.
