Body mass index and outcomes of patients with cardiogenic shock: A systematic review and meta-analysis.

Background: Cardiogenic shock continues to be a highly morbid complication that affects around 7%-10% of patients with acute myocardial infarction or heart failure. Similarly, obesity has become a worldwide epidemic.

Aim: To analyze the impact of higher body mass index (BMI) on outcomes of patients with cardiogenic shock.

The Influence of Tourists' Online Value Co-creation Behavior on Consumer-Brand Relationship Quality: The Moderating Effect of Altruism.

In recent years, there is the popular phenomenon of "grass planting" marketing. The value co-creation behavior of ordinary consumers KOC (key opinion consumer) in the online community is sometimes out of utilitarian intentions, which is deemed as plain people's "grass planting" advertising in a certain degree. We collected the tourists' data in Chinese Grand Canal National Cultural Park, analyzed the impact of value co-creation behaviors such as tourists' experience sharing, topic discussions, and suggestions in online communities on the value of tourism experience and the quality of brand relationships under the "planting grass" marketing environment and verified the moderating mechanism of tourist altruism in it.

The Impact of Nostalgia Proneness on Online Donation Willingness: The Mediating Effect of Consumer-Brand Relationship.

The rapid outbreak of COVID-19 wreaked havoc and brought a pause to the normal lives, and the labor market and human livelihoods were strongly negatively affected because of it. The emergence of groups that were unable to withstand various pressures has increased the appeal of donation behavior to a certain extent. Therefore, under the impetus of COVID-19 and digital background, online donation represented by Waterdrop financing has become popular.