Clinical Cancer Research, 5(4), 725-732. American Association for Cancer Research Inc. Brakenhoff, R H, Stroomer, J G W, Ten Brink, C, De Bree, R, Weima, S M, Snow, G B & Van Dongen, G A M S 1999, ' Sensitive detection of squamous cells in bone marrow and blood of head and neck cancer patients by E48 reverse transcriptase-polymerase chain reaction ', Clinical Cancer Research, vol. 5, no. 4, pp. 725-732 .