Lemming and Vole Cycles: A New Intrinsic Model.

It is 100 years since the first paper described the multiannual cycles in Arctic rodents and lagomorphs. The mechanisms driving population cycles in animals like lemmings and voles are complex, often attributed to extrinsic factors, such as food availability and quality, pathogens, parasites and/or predators. While extrinsic factors provide insights into population cycles, none fully explain the phenomenon.

Effect of the daily duration of calf contact on the dam's ultradian and circadian activity rhythms.

Cow-calf contact systems are attracting increasing interest among farmers and some are already being implemented into dairy farms. However, a comprehensive assessment of animal welfare in these systems is lacking. One reason for this is the large amount of time required for behavioral observations.

Perioperative outcomes of same-day discharge laparoscopic Roux-en-Y gastric bypass using the MBSAQIP database.

Background: There has been a rising trend of outpatient bariatric surgery, particularly accelerated by the COVID-19 pandemic. The aim of this study was to evaluate the safety and outcomes of same-day discharge laparoscopic Roux-en-Y gastric bypass (LRYGB) using the MBSAQIP database.

Methods: In this retrospective study, the MBSAQIP was queried for patients undergoing non-revisional LRYGB between 2020 and 2021.

Genetic Testing Among Breast Cancer Patients in the Eastern Region of Saudi Arabia: Single-Center Experience.

Background: Genetic testing for persons with a heightened likelihood of harboring a germline mutation permits early identification and appropriate management. This study aimed to identify the proportion of breast cancer (BC) patients who were offered genetic testing and the prevalence of BRCA mutations among them. Additionally, we assessed the demographic and clinical features of BC patients in the Eastern Region of Saudi Arabia.