function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akiyama, Tadashi', 10],
    ['Akiyama, Tadashi & Gamô, Sigeo', 19],
    ['Akiyama, Tadashi & Gerken, Sarah', 10],
    ['Bochert, Ralf & Zettler, Michael L.', 17],
    ['Brito, Ayrton Do Ramo & Serejo, Cristiana Silveira', 11],
    ['Corbera, Jordi', 34],
    ['Corbera, Jordi & Tirado, Paula & Martin, Daniel', 9],
    ['Gerken, Sarah', 311],
    ['Haye, Pilar A.', 31],
    ['Jarquín-González, Jani & García-Madrigal, María Del Socorro', 48],
    ['Kim, Sung-Hyun & Lee, Chang-Mok & Kim, Young-Hyo', 8],
    ['Mazziotti, Cristina & Lezzi, Marco', 14],
    ['Mühlenhardt-Siegel, Ute', 28],
    ['Petrescu, Iorgu', 161],
    ['Petrescu, Iorgu & Chatterjee, Tapas & Schizas, Nikolaos V.', 57],
    ['Other (39)', 102]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=870)',
    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);