%0 Letter %T Diagnostic challenge between a frequent polygenic hypocholesterolemia and an unusual Smith Lemli Opitz syndrome related to bi-allelic DHCR7 mutations. %A Bonnot Ruget M %A Moulin P %A Pagan C %A Cheillan D %A Marmontel O %A Raverot G %A Benlian P %A Di Filippo M %J Clin Chem Lab Med %V 62 %N 9 %D 2024 Aug 27 %M 38581293 %F 8.49 %R 10.1515/cclm-2024-0162