Prime Minister Ariel Sharon has undergone seven surgeries since suffering a massive stroke on Jan. 4: Jan. 4-6: Sharon undergoes three rounds of emergency brain surgery following hemorrhaging caused by the stroke. Jan. 15: Sharon undergoes a successful tracheotomy to help wean him off a respirator. Jan. 18: Doctors replace a breathing tube to correct a technical problem. Feb. 1: Sharon undergoes a gastronomy to insert a feeding tube in his stomach. The procedure indicates that doctors are preparing Sharon for long-term care. Feb. 11: Sharon undergoes emergency surgery after an abdominal scan reveals severe damage to his digestive track. Hospital officials warn his life is in danger.