The eardrum may need to be replaced and various tissue grafts may be used to replace it. These include the covering of the muscle from above the ear (fascia) and covering of ear cartilage (perichondruim), or covering from the skull (pericranium).
Doctors and dietitians generally recommend at least three large meals and three small meals in a day. The time interval between each feeding will be generally 2 to 3 three hours. One reason for this is that there will be no hunger pangs, and the food you eat will be in lesser quantity than when you keep a gap of 8 or ten hours between your meals.
The ideal time for a pre-race meal is about four hours before the race, because it's early enough to digest and store a large amount of energy (i.e. a large number of calories), yet late enough that this energy won't be used up by race time.