The effect of calcium on the secretion of factor VIII-related antigen by cultured human endothelial cells - Loesberg, C; Gonsalves, M D; Zandbergen, J; Willems, C; van Aken, W G; Stel, H V; van Mourik, J A; de Groot, P G (Biochem Biophys Acta, 1983)