function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Danilo S. & Sandes, Joana & Guimarães, Carmen R. P.', 4],
    ['Cárdenas, Paco & Menegola, Carla & Rapp, Hans Tore', 3],
    ['Cárdenas, Paco & Rapp, Hans Tore & Klitgaard, Anne Birgitte', 8],
    ['Cárdenas, Paco & Vacelet, Jean & Chevaldonné, Pierre', 4],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 4],
    ['Lehnert, Helmut & Stone, Robert P.', 2],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 3],
    ['Sim-Smith, Carina & Hickman, Cleveland & Kelly, Michelle', 2],
    ['Sim-Smith, Carina & Kelly, Michelle', 12],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 5],
    ['Ugalde, Diana & Gómez, Patricia & Simões, Nuno', 2],
    ['Van Soest, Rob W. M.', 15],
    ['Van Soest, Rob W. M. & Meesters, Erik H. W. G.', 2],
    ['Van, Rob W. M.', 9],
    ['Łukowiak, Magdalena', 2],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=82)',
    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);