Tramadol with or without paracetamol (acetaminophen) for cancer pain.
Cochrane Db Syst Rev. 2017 May 16; 5: CD012508.
Paracetamol versus placebo for knee and hip osteoarthritis.
Cochrane Db Syst Rev. 2019 Feb 25; 2: CD013273.
Oral paracetamol (acetaminophen) for cancer pain.
Cochrane Db Syst Rev. 2017 Jul 12; 7 (7): CD012637CD012637.