title: Letter to the Editor "Radiation and Environmental Biophysics": Comment on "Sex ratio at birth: scenario from normal- and high-level natural radiation areas of Kerala coast in south-west India" by Koya PK, Jaikrishan G, Sudheer KR, Andrews VJ, Madhusoodhanan M, Jagadeesan CK, Das B. Radiat Environ Biophys. 2015 Sep 5 [Epub ahead of print].
authors.affiliation: Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany. scherb@helmholtz-muenchen.de.
authors.forename: Hagen
authors.initials: H
authors.lastname: Scherb
authors.affiliation: Academic Department of Paediatrics, Medical School, Mater Dei Hospital, Msida, Malta.
authors.forename: Victor
authors.initials: V
authors.lastname: Grech
authors.affiliation: Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Kusmierz
authors.affiliation: Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany.
authors.forename: Kristina
authors.initials: K
authors.lastname: Voigt
mesh_terms: D000016:Abnormalities, Radiation-Induced / Q000453:epidemiology*; D001417:Background Radiation; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects / Q000453:epidemiology*; D011829:Radiation Dosage; D000069079:Radiation Exposure / Q000706:statistics & numerical data*; D012744:Sex Ratio