function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beaver, R. A. & Liu, L. Y.', 8],
    ['Beaver, Roger A. & Hulcr, Jiri', 1],
    ['Bright, Donald E.', 112],
    ['Bungartz, Frank & Hillmann, Georg & Kalb, Klaus & Elix, John A.', 2],
    ['Guzow-Krzeminska, Beata & Jablonska, Agnieszka & Flakus, Adam', 5],
    ['Jarvis, Charlie', 3],
    ['McMullin, Richard Troy & Simon, Andrew D. F. & Brodo, Irwin M.', 3],
    ['Oset, Magdalena & Kukwa, Martin', 2],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 2],
    ['Rabaglia, Robert J.', 2],
    ['Ramírez-Roncallo, Kevin & Gómez-Ramírez, Hugo', 1],
    ['Silva, Mauricio Pérez & Martínez, Armando Equihua', 17],
    ['Smith, Sarah M. & Petrov, Alexander V. & Cognato, Anthony I.', 1],
    ['Stepanova, Dace & Moisejevs, Rolands & Nitcis, Ma ris', 2],
    ['Zhang, Yan-Yun & Wang, Xin-Yu & Li, Li-Juan', 6],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=169)',
    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);