function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 4],
    ['Alderwerelt van Rosenburgh, Capt. C. R. W. K.', 1],
    ['Almeida, Thais Elias & Salino, Alexandre', 2],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 1],
    ['Christenhusz, Maarten J. M.', 4],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 1],
    ['Christensen, Carl C.', 1],
    ['Copeland, Edwin Bingham', 1],
    ['Ding, Hui-Hui & Chao, Yi-Shan & Dong, Shi-Yong', 5],
    ['Dong, Shi-Yong', 16],
    ['Dong, Shi-Yong & Li, Shu-Hang & Huang, Ling & Tan, Shi-Shi', 1],
    ['Holttum, Richard Erick', 10],
    ['Jarvis, Charlie', 2],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Pham, Van The & Li, Shu-Han & Dong, Shi-Yong', 1],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);