Hans-Wilhelm Muller-Wohlfahrt quit as Bayern Munich doctor this week . The 72-year-old had worked at the Bundesliga club for nearly 40 years . He said the medical department had been blamed for Porto defeat . German football has a long history of doping scandals and cover-ups, but it is still not clear how widespread such practices are in other European leagues or even whether they have become more common over time
Hans-Wilhelm Muller-Wohlfahrt quit as Bayern Munich doctor this week . The 72-year-old had worked at the Bundesliga club for nearly 40 years . He said the medical department had been blamed for Porto defeat . Pep Guardiola has denied there was a dispute and has taken responsibility for Bayern Munich 's Champions League loss .