David, As per our request the doctor decided to an baseline hearing test and found my dad had already an small hearing loss, which he never reported. So, the doctor has changed the cisplatin regimen altogether. He is now starting with Carboplatin 280 mg from the get go and in few hours. So, is this the right approach and is Carboplatin more effective or similar to Cisplatin? or they should have pursued it as a combination?.