Background: Many different intestinal parasite species can co-occur in the same population.

Conclusions: This nationwide study revealed that narcolepsy and psychotic disorders commonly co-occur.

Depression and anxiety co-occur with substance use and abuse at a high rate.

Objective: Depressive and anxiety symptoms co-occur with hazardous drinking among Latinxs.

Objective: Psychiatric and somatic disorders frequently co-occur in the same individuals.

Minimizing pain and maximizing pleasure are conflicting motivations when pain and reward co-occur.

Objective: Anxiety and depression frequently co-occur in the elderly and in patients with dementia.

Freshwater megafauna co-occur with up to 93% of mapped overall freshwater biodiversity.

Consequently, HPI and EFN-bearing plants may experience non-additive benefits or costs when these groups co-occur.

Background: Childhood maltreatment is associated with eating disorders, but types of childhood maltreatment often co-occur.

The metabolic dysfunctions co-occur with the HPG axis abnormalities.

Migraine and major depressive disorder (MDD) are common brain disorders that frequently co-occur.

Spina bifida has been reported to co-occur with pediatric cancer, but comprehensive evaluations remained elusive.

Cryptic species have been frequently observed to co-occur and are thus expected to be ecological equivalent.

To determine whether autophagy and apoptosis might precede each other or co-occur, we performed inhibitor studies.

We hypothesized that the LAD molecular subtypes co-occur with distinct mutations and alterations in patient tumors.