Perito, E. R., Palermo, T. M., Pohl, J. F., Mascarenhas, M., Abu-El-Haija, M., Barth, B., Bellin, M. D., Fishman, D. S., Freedman, S., Gariepy, C., Giefer, M., Gonska, T., Heyman, M. B., Himes, R. W., Husain, S. Z., Lin, T., Liu, Q., Maqbool, A., McFerron, B., Morinville, V. D., Nathan, J. D., Ooi, C. Y., Rhee, S., Schwarzenberg, S. J., Shah, U., Troendle, D. M., Werlin, S., Wilschanski, M., Zheng, Y., Zimmerman, M. B., Lowe, M., & Uc, A. (2020). factors Associated With Frequent Opioid Use in Children With Acute Recurrent and Chronic Pancreatitis. Journal of pediatric gastroenterology and nutrition, 70(1), . http://access.bl.uk/ark:/81055/vdc_100131653559.0x000046