Liu X, Behrman J, Hannum E, Wang F, Zhao Q. Same environment, stratified impacts? Air pollution, extreme temperatures, and birth weight in South China. Soc Sci Res. 2022 Jul;105:102691. doi: 10.1016/j.ssresearch.2021.102691
Bowater RJ, Hartley LC, Lilford RJ. Are cardiovascular trial results systematically different between North America and Europe? A study based on intra-meta-analysis comparisons. Arch Cardiovasc Dis. 2015 Jan;108(1):23-38. doi: 10.1016/j.acvd.2014.03.005