function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calcinai, Barbara & Bastari, Azzurra & Bavestrello, Giorgio', 2],
    ['Carter, H. J.', 1],
    ['Cárdenas, Paco & Menegola, Carla & Rapp, Hans Tore', 4],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 1],
    ['Esteves, Eduardo L. & Muricy, Guilherme', 2],
    ['Kelly, Michelle & Sim-Smith, Carina', 17],
    ['Lehnert, Helmut & Stone, Robert P.', 4],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 3],
    ['Schmidt, Eduard Oscar', 9],
    ['Sitjà, Cèlia & Maldonado, Manuel', 2],
    ['Topsent, Émile', 2],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 2],
    ['Van Soest, Rob W. M.', 9],
    ['Van Soest, Rob W. M. & Beglinger, Elly J. & De Voogd, Nicole J.', 30],
    ['Van, Rob W. M.', 5],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=98)',
    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);