Human Reproductive Cell Cryopreservation, Storage, Handling, and Transport: Risks and Risk Management. Alikani and Parmegiani 2019

Bacterial and fungal contamination risks in human oocyte and embryo cryopreservation. Comment. Parmegiani, 2016

A review of the risk of contamination of semen and embryos during cryopreservation and measures to limit cross-contamination during banking to prevent disease transmission in ET practices    
Bielanski, 2012
    
Use of liquid nitrogen during storage in a cell and tissue bank: Contamination risk and effect on the detectability of potential viral contaminants    
Mirabel, 2012
    
Storage of cryopreserved reproductive tis- sues: evidence that cross-contamination of infectious agents is a negligible risk
Pomeroy, 2010
    
Risk of contamination of germplasm during cryopreservation and cryobanking in IVF units
Bielanski, 2009

Contaminated liquid nitrogen vapour as a risk factor in pathogen transfer    
Grout, 2009
    
The origin, ultrastructure, and microbiology of the sediment accumulating in liquid nitrogen storage vessels     Morris, 2005    

Microbial contamination of embryos and semen during long term banking in liquid nitrogen
Bielanski, 2003
    
Viral Contamination of Embryos Cryopreserved in Liquid Nitrogen
Bielanski, 2000    
 
Liquid nitrogen freezers: a potential source of microbial contamination of hematopoietic stem cell components    Fountain, 1997    

Hepatitis B transmission from contaminated cryopreservation tank
Tedder, 1995
    
Transmission of virus particles by cryotherapy and multi-use caustic pencils: a problem to dermatologists?     Jones, 1989    

The effect of the sediment accumulated in containers under experimental conditions on the infection of semen stored directly in liquid nitrogen. Bull Acad Pol Sci Biol. 1972;20(4):263-7    
Piasecka-Serafin, 1972v