Found this mention in Chapter 16 of the book:
United States Army in World War II
European Theater of Operations
The Last Offensive
by Charles B. MacDonald
http://www.ibiblio.org/hyperwar/USA/USA-E-Last/USA-E-Last-16.html
In the course of the advance almost every division overran a number of military hospitals, and several units liberated prisoner-of-war camps. At Waldbroel, not far north of the Sieg River, the 78th Division freed 71 hospitalized American soldiers, only 2 of whom were able to walk. At Hemer the 7th Armored Division rescued 23,302 prisoners of war, most of them Russians, living under appalling conditions of filth, disease, and hunger. The only Americans, a group of 99, were in fair condition, having been assigned to the camp only a few days. Among the others, deaths were averaging more than a hundred a day.(37)
(37). See 7th Armd and 78th Div AAR's, Apr 45.