function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archibald, S. Bruce & Cannings, Robert A.', 2],
    ['Asahina, Syoziro', 1],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 6],
    ['Ferro, Michael L. & Sites, Robert W. & Vitheepradit, Akekawat', 1],
    ['Ghahari, H. & Thipaksorn, A. & Naderian, H. & Sakenin, H. & A. A', 1],
    ['Hagen, H.', 1],
    ['Hämäläinen, Matti & Dow, Rory A. & Stokvis, Frank R.', 4],
    ['Hämäläinen, Matti & Kosterin, Oleg E. & Kompier, Tom', 1],
    ['K. J. Morton', 2],
    ['Keetapithchayakul, Tosaphol Saetung & Sripanya, Jutamas', 2],
    ['Lieftinck, M. A.', 7],
    ['M. A. Lieftinck', 1],
    ['Phan, Quoc Toan & Kompier, Tom & Karube, Haruki & Hayashi, Fumio', 28],
    ['Schneider, Thomas & Ikemeyer, Dietmar & Müller, Ole', 1],
    ['de Sélys-Longchamps, Edmond', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);