Hi! Thank you very much for playing, a bug was found that prevented some players from getting a crucial item, it's fixed now. About the patient's files... A second playthrough is a good way to fish this information /o/
SPOILER/TIP
They are 4 chars codes as in _ _ _ _ that you find in the first part of the game, before locking the door. Then your brain must work them to 8 digits \o\