CONTENTS — volume 47, no 5, 2021

Editorial

329
Monitoring trends in psychosocial and physical working conditions: Challenges and suggestions for the 21st century
Burr H

Original article

335
Occupational trajectories of working conditions in Sweden: Development trends in the workforce, 1997–2015
Corin L, Pousette A, Berglund T, Dellve L, Hensing G, Björk L
349
Infection and death by COVID-19 in a cohort of healthcare workers in Mexico
Robles-Pérez E, González-Díaz B, Miranda-García M, Borja-Aburto VH
356
Efficacy of intermittent exposure to bright light for treating maladaptation to night work on a counterclockwise shift work rotation
Lammers-van der Holst HM, Wyatt JK, Horowitz TS, Wise JC, Wang W, Ronda JM, Duffy JF, Czeisler CA
367
Effectiveness of training in guideline-oriented biopsychosocial management of low-back pain in occupational health services – a cluster randomized controlled trial
Ryynänen K, Oura P, Simula A-S, Holopainen R, Paukkunen M, Lausmaa M, Remes J, Booth N, Malmivaara A, Karppinen J
377
Dysuria, heat stress, and muscle injury among Nicaraguan sugarcane workers at risk for Mesoamerican nephropathy
Stallings TL, Riefkohl Lisci A, McCray NL, Weiner DE, Kaufman JS, Aschengrau A, Ma Y, LaValley MP, Ramírez-Rubio O, Jose Amador J, López-Pilarte D, Laws RL, Winter M, McSorley VE, Brooks DR, Applebaum KM
387
Heart rate during work and heart rate variability during the following night: a day-by-day investigation on the physical activity paradox among blue-collar workers
Korshøj M, Lund Rasmussen C, de Oliveira Sato T, Holtermann A, Hallman D
395
Patterns of working hour characteristics and risk of sickness absence among shift-working hospital employees: a data-mining cohort study
Rosenström T, Härmä M, Kivimäki M, Ervasti J, Virtanen M, Hakola T, Koskinen A, Ropponen A

Short communication

404
Intensive longitudinal study of newly graduated nurses’ quick returns and self-rated stress
Dahlgren A, Tucker P, Bujacz A, Frögéli E, Rudman A, Gustavsson P

Letter to the Editor

408
Return-to-work, disabilities and occupational health in the age of COVID-19
Godeau D, Petit A, Richard I, Roquelaure Y, Descatha A