Soviet prisoners in the SS Auschwitz

From the memoirs of Andrey Pogozhev (prisoner 1418):

"On the whole, the camp system transformed hospitals, into the same terrible extermination camp. Only the methods were different…" "One method was the selection conducted by SS doctors until November 1944, which presented a threat to the life of each person being treated. There were completely inhumane medical experiments on prisoners."

(Pogozhev A., Stenkin P., Oswiecim Break-out. To Stay Alive. M. 2005. P. 113)