TY - RPRT TI - Simple perfusion pump for gastrointestinal manometry. AU - H R Koelz AU - H H Brändli AU - A L Blum PY - 1975 DO - 10.1016/s0140-6736(75)90437-7 UR - https://pubmed.ncbi.nlm.nih.gov/53557/ ID - 53557 ER -