First Aid; d20 vs HP of Damage Taken

Applying bandages, if undertaken immediately, may restore 1d4 HP
Roll 1d20 vs the number of HP of Damage Taken, wounds over 20 HP do not benefit
Clerics get +1 to attempt, and amount healed, no other Bonuses apply
Survival boost for low-level Characters 
Standard roll of bandages is 20 feet long, one foot required for each
HP of Damage Taken, need not be single piece