Reduced diclofenac administration by B vitamins: results of a randomized double-blind study with reduced daily doses of diclofenac (75 mg diclofenac versus 75 mg diclofenac plus B vitamins) in acute lumbar vertebral syndromes - Kuhlwein, A; Meyer, H J; Koehler, C O (Klin Wochenschr, 1990)