my dad has a pblm, wenevr wintr c0mes. .a sounds c0mes out fr0m hs chest, cnt xplain wt type of sound. .my dad says that it mkes s0unds frm d throat. .m nt xactly sure. .n mst imp it hpns 0nly 0n wintr nghts. .he had chck a sevral tmes bt reslt is n0rmal. .!!