TY - STAND AU - C. Zin AU - L. Chen AU - R. Knaggs BT - Eur J Pain DO - 10.1002/j.1532-2149.2014.496.x M1 - 9 PY - 2014 SP - 1343 EP - 51 T2 - Eur J Pain TI - Changes in trends and pattern of strong opioid prescribing in primary care VL - 18 SN - 1090-3801 ER -