function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Castro-Huertas, Valentina & Minghetti, Eugenia', 1],
    ['Cianferoni, Fabio', 1],
    ['Cianferoni, Fabio & Mazza, Giuseppe', 1],
    ['Cianferoni, Fabio & Rocchi, Saverio & Terzani, Fabio', 1],
    ['Cook, Jerry L.', 7],
    ['Cook, Jerry L. & Mondragón-F, Silvia P. & Morales, Irina', 3],
    ['Cook, Jerry L. & Sites, Robert W. & Vitheepradit, Akekawat', 4],
    ['Csabai, Zoltán & Soós, Nándor & Berchi, Gavril Marius', 1],
    ['Drake, C. J. & Chapman, H. C.', 1],
    ['Esenbekova, Perizat Abdykairovna', 1],
    ['Fent, Meral & Kment, Petr & Çamur-Elipek, Belgin & Kirgiz, Timur', 1],
    ['Ghahari, Hassan & Moulet, Pierre & Ostovan, Hadi', 2],
    ['Mazzucconi, Silvia Ana & Reyes, Cristina Armúa De', 4],
    ['Moreira, Felipe Ferraz Figueiredo & Barbosa, Julianna Freires', 4],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 6],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    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);