update links to hernan/robins book

causal-inference-for-the-brave-and-true/01-Introduction-To-Causality.ipynb

@@ -558,7 +558,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "The beer analogy was taken from the awesome [Stock Series](https://jlcollinsnh.com/2012/04/15/stocks-part-1-theres-a-major-market-crash-coming-and-dr-lo-cant-save-you/), by JL Colins. This is an absolute must read for all of those wanting to learn how to productively invest their money.\n",
     "\n",

causal-inference-for-the-brave-and-true/02-Randomised-Experiments.ipynb

@@ -395,7 +395,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "The data used here is from a study of Alpert, William T., Kenneth A. Couch, and Oskar R. Harmon. 2016. [\"A Randomized Assessment of Online Learning\"](https://www.aeaweb.org/articles?id=10.1257/aer.p20161057). American Economic Review, 106 (5): 378-82.\n",
     "\n",

causal-inference-for-the-brave-and-true/03-Stats-Review-The-Most-Dangerous-Equation.ipynb

@@ -898,7 +898,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "The data used here is from a study of Alpert, William T., Kenneth A. Couch, and Oskar R. Harmon. 2016. [\"A Randomized Assessment of Online Learning\"](https://www.aeaweb.org/articles?id=10.1257/aer.p20161057). American Economic Review, 106 (5): 378-82.\n",
     "\n",

causal-inference-for-the-brave-and-true/04-Graphical-Causal-Models.ipynb

@@ -1784,7 +1784,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/05-The-Unreasonable-Effectiveness-of-Linear-Regression.ipynb

@@ -1138,7 +1138,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/06-Grouped-and-Dummy-Regression.ipynb

@@ -1103,7 +1103,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/07-Beyond-Confounders.ipynb

@@ -1733,7 +1733,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/08-Instrumental-Variables.ipynb

@@ -1234,7 +1234,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/09-Non-Compliance-and-LATE.ipynb

@@ -660,7 +660,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/10-Matching.ipynb

@@ -1533,7 +1533,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",

causal-inference-for-the-brave-and-true/11-Propensity-Score.ipynb

@@ -1237,7 +1237,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "The data that we used was taken from the article [Estimating Treatment Effects with Causal Forests: An Application](https://arxiv.org/pdf/1902.07409.pdf), by Susan Athey and Stefan Wager. \n",
     "\n",

causal-inference-for-the-brave-and-true/12-Doubly-Robust-Estimation.ipynb

@@ -664,7 +664,7 @@
     "\n",
     "My final reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "The data that we used was taken from the article [Estimating Treatment Effects with Causal Forests: An Application](https://arxiv.org/pdf/1902.07409.pdf), by Susan Athey and Stefan Wager. \n",
     "\n",

causal-inference-for-the-brave-and-true/13-Difference-in-Differences.ipynb

@@ -454,7 +454,7 @@
     "\n",
     "Other important reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "Finally, I'd also like to compliment Scott Cunningham and his brilliant work mingling Causal Inference and Rap quotes:\n",
     "\n",

causal-inference-for-the-brave-and-true/14-Panel-Data-and-Fixed-Effects.ipynb

@@ -1004,7 +1004,7 @@
     "\n",
     "Another important reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "Finally, I'd also like to compliment Scott Cunningham and his brilliant work mingling Causal Inference and Rap quotes:\n",
     "\n",

causal-inference-for-the-brave-and-true/15-Synthetic-Control.ipynb

@@ -1233,7 +1233,7 @@
     "\n",
     "Other important reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "Finally, I'd also like to compliment Scott Cunningham and his brilliant work mingling Causal Inference and Rap quotes:\n",
     "\n",

causal-inference-for-the-brave-and-true/16-Regression-Discontinuity-Design.ipynb

@@ -918,7 +918,7 @@
     "\n",
     "Other important reference is Miguel Hernan and Jamie Robins' book. It has been my trustworthy companion in the most thorny causal questions I had to answer.\n",
     "\n",
-    "* [Causal Inference Book](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/)\n",
+    "* [Causal Inference Book](https://miguelhernan.org/whatifbook)\n",
     "\n",
     "![img](./data/img/poetry.png)\n",
     "\n",