Paracetamol, Prostate and HIFU, Uncertainty - Oxygen and Heart Attacks

Evidence suggests Paracetamol is neither as effective or safe as previously thought for chronic pain; Prostate cancer and new targeted treatments with fewer side effects plus feedback following last week's special edition; And is giving oxygen in heart attacks a help or hindrance? Margaret McCartney and Carl Heneghan debate the first in a new mini-series investigating uncertainty in medicine.