1. Unit of PharmacoEpidemiology & PharmacoEconomics (PE2), Department of Pharmacy; University of Groningen; Groningen the Netherlands
2. National Blood Service Zimbabwe; Harare Zimbabwe
3. Julius Center for Health Science and Primary Health Care, University Medical Center Utrecht; the Netherlands
4. Department of Community Medicine, College of Health Sciences; University of Zimbabwe; Harare Zimbabwe
5. Institute of Science in Healthy Aging & Health caRE (SHARE); University Medical Center Groningen (UMCG)
6. Department of Clinical Pharmacy and Toxicology; Martini Hospital; Groningen the Netherlands.