Lee, N. G., You, J. (. H., Kim, T., & Choi, B. S. (2015). Intensive abdominal drawing-in maneuver after unipedal postural stability in nonathletes with core instability. Journal of athletic training, 50(2), S. 147-155. doi:10.4085/1062-6050-49.3.91

Lee, Nam G., Joshua (Sung) H. You, Tae-Hyung Kim, and Bong S. Choi. "Intensive Abdominal Drawing-in Maneuver After Unipedal Postural Stability in Nonathletes With Core Instability." Journal of Athletic Training 50, no. 2 (2015): S. 147-155.

Lee, Nam G., Joshua (Sung) H. You, Tae-Hyung Kim, and Bong S. Choi. "Intensive Abdominal Drawing-in Maneuver After Unipedal Postural Stability in Nonathletes With Core Instability." Journal of Athletic Training 50.2 (2015): S. 147-155.