The gastric-aspirate shake test.
D003937:Diagnosis, Differential; D005750:Gastric Juice / Q000032:analysis*; D006801:Humans; D007231:Infant, Newborn; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis*; D013501:Surface-Active Agents / Q000032:analysis*
D013501:Surface-Active Agents