function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ananjeva, Natalia B. & Milto, Konstantin D.', 1],
    ['Bailon, Salvador & Aouraghe, Hassan', 1],
    ['Bonnaterre, Pierre Joseph', 5],
    ['Dubois, Alain & Bour, Roger', 2],
    ['Fritz, Uwe & Petzold, Alice & Kehlmaier, Christian', 2],
    ['Ginsburg, Léonard & Cheneval, Jacques & Janvier, Philippe', 1],
    ['Gmira, Saloua & Broin, France De Lapparent De & Geraads, Denis', 4],
    ['Hay, OP', 1],
    ['Hermann, Johann', 2],
    ['Iverson, John B.', 17],
    ['Linnaeus, Carolus', 13],
    ['Luján, Àngel H. & Čerňanský, Andrej & Bonilla-Salomón, Isaac', 2],
    ['Nowak-Kemp, Małgosia & Fritz, Uwe', 4],
    ['Rhodin, Anders G. J. & Carr, John L.', 2],
    ['Van Denburgh, John', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    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);