共 50 条
- [43] ON CALCULATING COST ELASTICITIES LOGISTICS AND TRANSPORTATION REVIEW, 1992, 28 (03): : 231 - 235
- [49] Safety, Feasibility, and Cost-Effectiveness of Pediatric Gastrointestinal Procedures at an Outpatient Endoscopy Center AMERICAN JOURNAL OF GASTROENTEROLOGY, 2019, 114 : S645 - S645