Error message

Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in _biblio_bibtex_export() (line 406 of sites/all/modules/biblio/modules/bibtexParse/biblio_bibtex.module).

Can masses of non-experts train highly accurate image classifiers? A crowdsourcing approach to instrument segmentation in laparoscopic images