On 2015 Nov 19, Robert Eibl commented:

The authors could have acknowledged the originator of measruring such interactions. To the best of my knowledge to date, I contacted the Physics Lab in Munich in 2001 and started for several years as unpaid guest-scientist in Hermann Gaub's lab a collaboration to transfer my unpublished findings from Stanford University (with Irv Weissman as official sponosr) on lymphocyte-like rolling cancer cells into the specific measurement of such interactions by atomic force microscopy (AFM). The authors could also have cited the first paper on such measurements: Eibl RH and Benoit M, Molecular resolution of cell adhesion forces. IEE - Nanobiotechnology 151(3):128-132 (2004)

On 2015 Nov 19, Robert Eibl commented:

The authors could have acknowledged the originator of measruring such interactions. To the best of my knowledge to date, I contacted the Physics Lab in Munich in 2001 and started for several years as unpaid guest-scientist in Hermann Gaub's lab a collaboration to transfer my unpublished findings from Stanford University (with Irv Weissman as official sponosr) on lymphocyte-like rolling cancer cells into the specific measurement of such interactions by atomic force microscopy (AFM). The authors could also have cited the first paper on such measurements: Eibl RH and Benoit M, Molecular resolution of cell adhesion forces. IEE - Nanobiotechnology 151(3):128-132 (2004)