1. Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children´s Hospital, Medical Faculty, Düsseldorf, Germany, Komfo Anokye Teaching Hospital, Kumasi, Ghana
2. Kumasi Centre for Collaborative Research in Tropical Medicine, Kumasi, Ghana
3. Komfo Anokye Teaching Hospital, Kumasi, Ghana, Kumasi Centre for Collaborative Research in Tropical Medicine, Kumasi, Ghana, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
4. Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children´s Hospital, Medical Faculty, Düsseldorf, Germany