INS and diabetes mellitus: Comprehensive analysis of all coding regions and exon-intron boundaries of the monogenic diabetes genes (GCK, HNF1A, HNF4A, HNF1B, NEUROD1, INS, INSR, KCNJ11, ABCC8, PDX1, PAX6, GATA6, LMNA, and PPARG) and the mitochondrial m.3243A>G (MIDD) mutation was performed using targeted next-generation sequencing (Agilent custom capture v5/Illumina HiSeq).