Homozygous Protein S Deficiency: 7-Year Follow-Up - Mahasandana, Chularatana; Veerakul, Gavivann; Tanphaichitr, Voravam S; Suvatte, Vinai; Opartkiattikul, Nisarat; Hathaway, William E (Thrombosis and Haemostasis, 1996)