function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Diogo & Alves, Marccus', 2],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 2],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Do, Truong Van & Hoang, Thao Thi & Wen, Fang & Wanke, Stefan', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 4],
    ['Info Flora', 4],
    ['Jarvis, Charlie', 20],
    ['Jiménez, José Esteban & Fernández, Reinaldo Aguilar', 2],
    ['Kashung, Soyala & Gajurel, Padma Raj & Singh, Binay', 2],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 2],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 2],
    ['Luu, Hong Truong & Nguyen, Tran Quoc Trung & Nguyen, Quoc Dat', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 2],
    ['Schmidt, Otto Christian', 4],
    ['Zhu, Xinxin & Li, Xiaoqin & Liao, Shuai & Li, Guodong', 2],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    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);