function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Sendra, Alberto & Antić, Dragan & Barranco, Pablo & Borko, Špela', 18],
    ['Sendra, Alberto & Lopez, Heriberto & Selfa, Jesus & Oromi, Pedro', 1],
    ['Sendra, Alberto & Nikoloudakis, Ioannis & Gavalas, Ioannis', 2],
    ['Sendra, Alberto & Palero, Ferran & Sánchez-García, Alba', 2],
    ['Sendra, Alberto & Reboleira, Ana Sofia P. S.', 9],
    ['Sendra, Alberto & Sket, Boris & Stoev, Pavel', 4],
    ['Sendra, Alberto & Sánchez-García, Alba & Hoch, Hannelore', 5],
    ['Sendra, Alberto & Wagnell, Craig', 1],
    ['Sendra, Alberto & Yoshizawa, Kazunori & Ferreira, Rodrigo Lopes', 2],
    ['Sánchez-García, Alba & Sendra, Alberto & Davis, Steven', 7],
    ['Tajovský, Karel & Pižl, Václav & Čuchta, Peter', 2],
    ['Tusun, Sadreddin & Satar, Ali', 7],
    ['Wang, Ye-Hao & Huang, Di-Ying & Cai, Chen-Yang', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);