Leif Albert Jørgensen is a statistician with extensive experience in pharmaceutical research, pharmacoepidemiology, real-world evidence and statistical analysis. His career includes work in pharmaceutical companies, national statistical agencies and consulting, with experience in drug development, registry-based research and regulatory studies.

Nelly Louise Shapero has contributed to the development of the book and brings additional experience in pharmaceutical research and real-world evidence.

The authors are available for lectures, workshops and consulting in real-world evidence and observational research.