1. Chair and Department of Descriptive and Topographic Anatomy; School of Medicine with Division of Dentistry in Zabrze; Medical University of Silesia in Katowice; Zabrze Poland
2. Higher School of Strategic Planning in Dąbrowa Górnicza; Śląski Uniwersytet Medyczny w Katowicach; Klinika Chirurgii i Urologii Dziecięcej; Katowice Poland
3. Clinical Department of Children's Surgery, Department of Children's Surgery and Urology, School of Medicine in Katowice; Medical University of Silesia in Katowice; Katowice Poland