User profiles for M. Koivu

Marika Koivu

PhD candidate, University of Turku
Verified email at utu.fi
Cited by 147

Extending thrombolysis to 4· 5–9 h and wake-up stroke using perfusion imaging: a systematic review and meta-analysis of individual patient data

…, A Meretoja, T Tatlisumak, G Sibolt, M Tiainen, M Koivu… - The Lancet, 2019 - thelancet.com
Background Stroke thrombolysis with alteplase is currently recommended 0–4·5 h after
stroke onset. We aimed to determine whether perfusion imaging can identify patients with …

The effect of 60-h sleep deprivation on cardiovascular regulation and body temperature

J Vaara, H Kyröläinen, M Koivu, M Tulppo… - European journal of …, 2009 - Springer
This study examined cardiovascular regulation and body temperature (BT) during 60 h of
sleep deprivation in 20 young healthy cadets. Heart rate variability was measured during an …

The occurrence of acute otitis media in infants. A life-table analysis

OP Alho, M Koivu, M Sorri, P Rantakallio - International journal of pediatric …, 1991 - Elsevier
A random sample of 2512 children were monitored to an average age of two years to determine
the occurrence of acute otitis media (AOM). A life-table methodology was employed in …

Technical and cost efficiency of oral health care provision in Finnish health centres

M Linna, A Nordblad, M Koivu - Social science & medicine, 2003 - Elsevier
In this study we measured the productive efficiency of public dental health provision across
Finland. The analysis was based on data envelopment analysis (DEA) using linear …

A stochastic programming model for asset liability management of a Finnish pension company

P Hilli, M Koivu, T Pennanen, A Ranne - Annals of Operations Research, 2007 - Springer
… In reality, the values of m and σ are not fixed for eternity, but are updated by the Ministry of …
We have decided to keep the values m and σ fixed in our optimization model partly because of …

Risk factors for recurrent acute otitis media and respiratory infection in infancy

OP Alho, M Koivu, M Sorri, P Rantakallio - International journal of pediatric …, 1990 - Elsevier
Using a cohort-based design and random enrollment, the relation of various risk factors to
acute otitis media, respiratory infection and wheezy bronchitis was studied in 2512 children …

Risk factors for chronic otitis media with effusion in infancy: Each acute otitis media episode induces a high but transient risk

OP Alho, H Oja, M Koivu, M Sorri - Archives of Otolaryngology …, 1995 - jamanetwork.com
Objective: To examine the effects of a history of acute otitis media and different extrinsic
factors on the risk of chronic otitis media with effusion in infancy. Design: A retrospective birth …

Epi-convergent discretizations of stochastic programs via integration quadratures

T Pennanen, M Koivu - Numerische mathematik, 2005 - Springer
… 28], Chen and Womersley [11] and in Pennanen and Koivu [32]. In [12], integration quadratures
… Pennanen, T., Koivu, M.: Integration quadratures in discretization of stochastic programs. …

What is an 'otitis-prone'child?

OP Alho, M Koivu, M Sorri - International journal of pediatric …, 1991 - Elsevier
The present report concerns a random sample of 2512 children monitored for acute otitis
media up to the age of two years. The criteria given by previous surveys classified from 1.8 to …

[HTML][HTML] Structural characterization of EGFR exon 19 deletion mutation using molecular dynamics simulation

MZ Tamirat, M Koivu, K Elenius, MS Johnson - PloS one, 2019 - journals.plos.org
Epidermal growth factor receptor (EGFR) is a tyrosine kinase receptor important in diverse
biological processes including cell proliferation and survival. Upregulation of EGFR activity …