Mishneh Halachot, R' Menashe Klein: The Many Issues and Considerations About Metzitzah Bepeh at Brit Milah. The Influence of Chassidut on R' Klein Seen in this Teshuvah. - Oct 30, 2022 - In memory of R' Eliezer Kugel, zt"l. R' Rakeffet's teachers all shaved. At 6 weeks one can first determine sex of embryo. Metzitzah bepeh (MB): R' Hirsch against MB. R' Korobkin article in Jewish Action, Winter 2006. Mishneh Halachot 13:183: Responsum to R' Yaakov Hopfer of Baltimore. Is MB halakhah le-Moshe mi-Sinai? Is the existence of AIDS a consideration? Kovno Rav called a Rabbis conference on civil marriage. MB done for generations. Issues of Brit Milah on Shabbat. Is MB integral part of brit or only for health? Use of a pipette. R' Eliashiv: Maybe mohel is sick? R' Salant. AIDS test on baby. R' Moshe on smoking. R' Menashe Klein recommends via mouth with tests if necessary. We see the influence of Chassidut in R' Klein's responsum