15 ወቅት
331 ክፍል
ER - Season 4
- አመት: 2009
- ሀገር: United States of America
- ዘውግ: Drama
- ስቱዲዮ: NBC
- ቁልፍ ቃል: chicago, illinois, hospital, doctor, surgical operation, emergency room, medical drama
- ዳይሬክተር: Michael Crichton
- ተዋንያን: Maura Tierney, Parminder Nagra, Linda Cardellini, Scott Grimes, David Lyons, Angela Bassett