function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Austin, William C. & Ott, Bruce S. & Reiswig, Henry M.', 2],
    ['Hajdu, Eduardo & Desqueyroux-Faúndez, Ruth', 1],
    ['Heim, Isabel & Nickel, Michael', 2],
    ['Heim, Isabel & Nickel, Michael & Picton, Bernard', 1],
    ['Ribeiro, Suzi M. & Muricy, Guilherme', 5],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 1],
    ['Samaai, Toufiek & Gibbons, Mark J. & Muricy, Guilherme', 1],
    ['Sarà, Michele & Bavestrello, Giorgio & Calcinai, Barbara', 4],
    ['Sim-Smith, Carina & Hickman, Cleveland & Kelly, Michelle', 2],
    ['Sorokin, Shirley J. & Ekins, Merrick G. & Yang, Qi', 1],
    ['Topsent, Émile', 1],
    ['Turner, Thomas L.', 1],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 1],
    ['Van, Rob W. M. & Kaiser, Kirstie L. & Syoc, Robert Van', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);