function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calcinai, Barbara & Bavestrello, Giorgio & Bertolino, Marco', 8],
    ['Cedro, Victor R. & Hajdu, Eduardo & Correia, Monica D.', 2],
    ['Goodwin, Claire & Brickle, Paul', 2],
    ['Goodwin, Claire E. & Berman, Jade & Hendry, Katharine R.', 3],
    ['Gugel, Jochen & Pfannkuchen, Martin & Brümmer, Franz', 3],
    ['Göcke, Christian & Janussen, Dorte', 2],
    ['Lehnert, Helmut & Stone, Robert & Heimler, Wolfgang', 2],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 3],
    ['Samaai, Toufiek & Pillay, Ruwen & Janson, Liesl', 3],
    ['Schejter, Laura & Cristobo, Javier & Ríos, Pilar', 2],
    ['Turner, Thomas L. & Lonhart, Steve I.', 2],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 2],
    ['Urgorri, Victoriano & Díaz-Agras, Guillermo', 3],
    ['Van, Rob W. M.', 5],
    ['Van, Rob W. M. & Aryasari, Ratih & De, Nicole J.', 93],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=140)',
    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);