Boekema PJ, Samsom M, van Berge Henegouwen GP, Smout AJ (1999). “Coffee and gastrointestinal function: facts and fiction. A review”. Scandinavian Journal of Gastroenterology. Supplement. 34 (230): 35–39. doi:10.1080/003655299750025525. PMID10499460.
Cornwall HL, Edwards BA, Curran JF, Boyce S (tháng 5 năm 2020). “Coffee to go? The effect of coffee on resolution of ileus following abdominal surgery: A systematic review and meta-analysis of randomised controlled trials”. Clinical Nutrition. 39 (5): 1385–1394. doi:10.1016/j.clnu.2019.06.003. PMID31253438. S2CID195766007.
Wu JN, Ho SC, Zhou C, Ling WH, Chen WQ, Wang CL, Chen YM (tháng 11 năm 2009). “Coffee consumption and risk of coronary heart diseases: a meta-analysis of 21 prospective cohort studies”. International Journal of Cardiology. 137 (3): 216–225. doi:10.1016/j.ijcard.2008.06.051. PMID18707777.
Xie C, Cui L, Zhu J, Wang K, Sun N, Sun C (tháng 2 năm 2018). “Coffee consumption and risk of hypertension: a systematic review and dose-response meta-analysis of cohort studies”. Journal of Human Hypertension. 32 (2): 83–93. doi:10.1038/s41371-017-0007-0. PMID29302055. S2CID3515374.
Boekema PJ, Samsom M, van Berge Henegouwen GP, Smout AJ (1999). “Coffee and gastrointestinal function: facts and fiction. A review”. Scandinavian Journal of Gastroenterology. Supplement. 34 (230): 35–39. doi:10.1080/003655299750025525. PMID10499460.
Cornwall HL, Edwards BA, Curran JF, Boyce S (tháng 5 năm 2020). “Coffee to go? The effect of coffee on resolution of ileus following abdominal surgery: A systematic review and meta-analysis of randomised controlled trials”. Clinical Nutrition. 39 (5): 1385–1394. doi:10.1016/j.clnu.2019.06.003. PMID31253438. S2CID195766007.
Wu JN, Ho SC, Zhou C, Ling WH, Chen WQ, Wang CL, Chen YM (tháng 11 năm 2009). “Coffee consumption and risk of coronary heart diseases: a meta-analysis of 21 prospective cohort studies”. International Journal of Cardiology. 137 (3): 216–225. doi:10.1016/j.ijcard.2008.06.051. PMID18707777.
Xie C, Cui L, Zhu J, Wang K, Sun N, Sun C (tháng 2 năm 2018). “Coffee consumption and risk of hypertension: a systematic review and dose-response meta-analysis of cohort studies”. Journal of Human Hypertension. 32 (2): 83–93. doi:10.1038/s41371-017-0007-0. PMID29302055. S2CID3515374.
Cornwall HL, Edwards BA, Curran JF, Boyce S (tháng 5 năm 2020). “Coffee to go? The effect of coffee on resolution of ileus following abdominal surgery: A systematic review and meta-analysis of randomised controlled trials”. Clinical Nutrition. 39 (5): 1385–1394. doi:10.1016/j.clnu.2019.06.003. PMID31253438. S2CID195766007.
Xie C, Cui L, Zhu J, Wang K, Sun N, Sun C (tháng 2 năm 2018). “Coffee consumption and risk of hypertension: a systematic review and dose-response meta-analysis of cohort studies”. Journal of Human Hypertension. 32 (2): 83–93. doi:10.1038/s41371-017-0007-0. PMID29302055. S2CID3515374.