I am a 4th year and have exactly 5 weeks left on the wards. Unfortunately, my two white coats are dingy and have pen stains. I really don't want to buy a new coat. Plus, I still have to take Step 2 CS and need a clean coat for that. Any advice for how to get them really bright and clean? Have you found anything that works will for pen stains? I have them soaking in oxyclean and hot water right now ... but I would really appreciate any tips. Thanks!