function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, X. & Heiss, E. & Cai, W.', 15],
    ['Castro-Huertas, Valentina & Minghetti, Eugenia', 1],
    ['Contreras, Eugenia Fernanda & Coscarón, María Del Carmen', 6],
    ['Coscarón, María Del Carmen & Contreras, Eugenia Fernanda', 1],
    ['Dursun, Ahmet & Fent, Meral', 1],
    ['Eiss', 1],
    ['Fabricius, Johann Christian', 1],
    ['Ghahari, Hassan & Heiss, Ernst', 8],
    ['Heiss, E.', 3],
    ['Heiss, Ernst', 10],
    ['Heiss, Ernst & Barr, Cheryl', 9],
    ['Heiss, Ernst & Scudder, Geoffrey G. E.', 15],
    ['Heiss, Ernst & Shono, Yoshinori', 4],
    ['Kment, Petr & Kolínová, Zdislava & Heiss, Ernst', 7],
    ['Pham, Minhlan & Bai, Xiaoshuan & Heiss, Ernst & Cai, Wanzhi', 4],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=93)',
    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);