Analgesic efficacy and safety of morphine in the Procedural Pain in Premature Infants (Poppi) study: randomised placebo-controlled trial
Hartley C., Moultrie F., Hoskin A., Green G., Monk V., Bell JL., King AR., Buckle M., van der Vaart M., Gursul D., Goksan S., Juszczak E., Norman JE., Rogers R., Patel C., Adams E., Slater R.