Eculizumab therapy monitoring: Residual hemolysis in alternative pathway test is not caused by C5 activity. (October 2018) - van den Heuvel, Lambertus; Sarlea, Andrei; Duineveld, Caroline; Mollnes, Tom Eirik; Wijnsma, Kioa; Wetzels, Jack; van de Kar, Nicole; Volokhina, Elena