function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blyth, E.', 1],
    ['David, Armand', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 4],
    ['Elliot, Daniel Giraud', 1],
    ['Fourvel, Jean-Baptiste & Fosse, Philippe & Fernandez, Philippe', 1],
    ['Horsfield, Thomas', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 5],
    ['Jo, Yeong-Seok & Baccus, John T. & Koprowski, John L.', 3],
    ['Linnaeus, Carolus', 5],
    ['Merriam, Clinton Hart', 73],
    ['Montoya, Plinio & Ginsburg, Léonard & Alberdi, María Teresa', 1],
    ['Pallas, Peter Simon', 1],
    ['W. Christopher Wozencraft', 5],
    ['Wagner, Jan & Jiangzuo, Qigao & Lenardić, Jadranka Mauch', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 28],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=138)',
    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);