Table I.

Search strategies.

Database	Time span	Search strategies
Pubmed	1966-March 12, 2013	((“SCGB3A2”[MH] → “SCGB3A2 protein, human[supplementary concept]”) OR(“SCG3A2”[ALL] OR “Uteroglobin-related protein1”[ALL] OR “Clara cell secretory protein-related protein”[ALL] OR “UGRP1”[ALL])) AND ((“polymorphism, genetic”[MH] OR “polymorphism, single nucleotide”[MH] OR (“polymorphism*”[ALL] OR “variant*”[ALL] OR “genetic*”[ALL] OR “mutant*” [ALL])) AND (“asthma”[MH] OR “asthma”[ALL] OR “bronchial hyperreactivity”[ALL] OR “respiratory hypersensitivity” [ALL] OR “bronchial asthma*”[ALL]) AND “humans”[MH]
EBSCOhost	1997-March 8, 2013	(asthma[subject terms] OR asthma[all text] OR “bronchial asthma”[all text] OR “bronchial hyperreactivity”[all text] OR “respiratory hypersensitivity”[all text]) AND (polymorphism[subject terms] OR polymorphism[all text] OR “genetic polymorphism”[all text] OR “single nucleotide polymorphism”[all text] OR variant*[all text] OR mutant*[all text]) AND (SCG3A2[all text] OR “Uteroglobin-related protein1”[all text] OR “Clara cell secretory protein-related protein” [all text])
BIOSIS Previews	1950-March 12, 2013	#1. Topic=(UGRP1) OR Topic=(SCGB3A2) OR Topic=(Uteroglobin-related protein1) OR Topic=(Clara cell secretory protein-related protein) #2. Topic=(polymorphism*) OR Topic=(variant*) OR Topic=(mutant*) OR Topic=(genetic*) #3. Topic=(asthma) OR Topic=(bronchial asthma) OR Topic=(bronchial hyperreactivity) OR Topic=(respiratory hypersensitivity) #4. #1 AND #2 AND #3

SCGB3A2, secretoglobin, family 3A, member 2.