Ghali C, Fioretti A, Scavone M, Bossi E, Clerici B, Birocchi S, Popov E, Centola M, Podda G, Cattaneo M. Variables influencing the <i>in vitro</i&gt; measurement of spontaneous aggregation of human platelets. Haematologica; https://doi.org/10.3324/haematol.2025.287601 [Early view].