Cole W, Samsell B, Moore MA. Achilles tendon augmented repair using human acellular dermal matrix: a case series. J Foot Ankle Surg. 2018 Dec;57(6):1225-9. doi: 10.1053/j.jfas.2018.03.006
Williams VSL. The "unbiased" anchor: bridging the gap between DIF and item bias. Appl Meas Educ. 1997;10(3):253-67. doi: 10.1207/s15324818ame1003_4