function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. W', 18],
    ['Aptroot, André & A, Lidiane & Santos, lves dos & E, Marcela', 1],
    ['Bossert, Silas & Copeland, Robert S. & Sless, Trevor J. L.', 1],
    ['Frolov, Ivan V. & Prokopiev, Ilya A. & Yakovchenko, Lidia S.', 2],
    ['Jarvis, Charlie', 3],
    ['Lee, Beeyoung Gun & Hur, Jae-Seoun', 2],
    ['Li, Lijuan & Zhang, Yanyun & Printzen, Christian & Wang, Lisong', 1],
    ['McMullin, Richard Troy & Simon, Andrew D. F. & Brodo, Irwin M.', 5],
    ['Namyatova, Anna A. & Cassis, Gerasimos', 1],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 1],
    ['Sokoloff, Paul C. & Freebury, Colin E. & Hamilton, Paul B.', 2],
    ['Stepanova, Dace & Moisejevs, Rolands & Nitcis, Ma ris', 1],
    ['Stoddart, H. E. & Lowry, J. K.', 2],
    ['W, Andreas', 1],
    ['Wilk, Karina', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    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);