%0 Journal Article %T Three minutes walking test in correlation to six minutes walking test in COPD patients %A Koraa, E E, A %A Ali, E, R %A Elshaer, T, K %J QJM: An International Journal of Medicine %V 113 %N Supplement_1 %@ 1460-2725 %D 2020-03-01 %I Oxford University Press %~ DeepDyve