 Complete the following phrase:  An SS-Sonderkommando unit led by SS-Sturmbannführer Herbert Lange murdered 1,201 psychiatric patients at the Tiegenhof psychiatric hospital in the Free City of Danzig, 1,100 patients in Owińska, 2,750 patients at Kościan, and 1,558 patients at Działdowo, as well as hundreds of Poles at 